检索结果-内蒙古大学图书馆

systems AND computers IN JAPAN 1995年第7期26卷 1-12页

作者： FUJIWARA, E TANAKA, T Member Faculty of Engineering Tokyo Institute of Technology Tokyo Japan 152 Eui Fujiwara:received his B.S. and M.S. degrees in Electronics Engineering in 1968 and 1970 respectively and his Dr. of Eng. degree in 1981 all from Tokyo Institute of Technology. In 1970 he joined the NTT Musashino Electrical Communication Laboratories and engaged in developing PIPS-1 and PIPS-11 computer systems. In 1988 he joined the Department of Computer Science Tokyo Institute of Technology as an Associate Professor. In 1990 he became a full Professor. He was a Visiting Professor at the Center for Advanced Computer Studies the University of Southwestern Louisiana from June 1985 to July 1986. His current research interests include coding theory for computers fault-tolerant memories VLSI defect-toleranceand WSI systems. He is a co-author ofError Control Coding for Computer Systems(Prentice-Hall1989) EssentiaLF of Error-Correcting Coding Techniques (Academic Press 1990) and other books. Dr. Fujiwara received the Young Engineer Award from the I.E.I.C.E. in 1978 and the Teshima Memorial Research Award in 1991. He is a senior member of the IEEE and a member of the Information Processing Society Japan. Associate Member

because of its capability of high-speed search, the associative memory (CAM) is expected to be used in a variety of information processing systems. In this paper, novel fault-tolerant techniques which are effective for on-line use are proposed for TLb which is an example of the application of CAM. First, fault and error models of the TLb consisting of the CAM part and the sRAM part are clarified. Then, the fault-tolerant techniques for these faults and errors, such as distance separable technique, cod-ing technique, simplified 1-out-of-n check and graceful degradation, are proposed. The distance separable technique which encodes the data stored in the CAM part is the one which masks the faulty CAM part and prevents errors from propagating to the subsequent circuits. The coding technique checks the one-to-one correspondence between the data in the CAM and those in sRAM by using the sEC-DED code with byte error detection capability, i.e., sEC-DED-sbED code, and at the same time it detects and corrects errors in the data stored in sRAM. The simplified 1-out-of-n check processes association errors. The graceful degradation gives a flag in the faulty memory section and prevents it from being used. The methods proposed in this paper are evaluated from area augmentation and error detection capability perspectives. The results show that the fault-tolerant TLb with 32 virtual address bits, 32 physical address bits and 128 entries gives single fault detection probability of nearly 99 percent with 28 percent area increase.

关键词： CAM TLb DIsTANCE sEPARAbLE TECHNIQUE CODING TECHNIQUE sIMPLIFIED 1-OUT-OF-N CHECK GRACEFUL DEGRADATION

来源：评论

学校读者我要写书评

暂无评论

DETERMINATION OF EXTREME sEAs ENCOUNTERED bY OPERATIONAL sHIPs

引用

NAVAL ENGINEERs JOURNAL 1995年第3期107卷 197-215页

作者： ZAHN, Pb GRIM, M Mr. Zahn received a B.S. degree in Naval Architecture and Marine Engineering from Webb Institute in 1980 and has published various papers on offshore systems computer tools for engineering and operations and icebreaker design and performance. He is a member of ASNE and SNAME Mr. Grim received a Bachelor of Science in Ocean Engineering from Virginia Polytechnic Institute and State University in 1992. He is a member of SNAME

In March of 1993, components of a CVN battle Group deploying to the Mediterranean encountered heavy seas in the area between Norfolk and bermuda, This was the storm referred to in the press as The blizzard of '93. The ships involved reported damage as a result of wave action, but continued their transit without incident and with full mission capability intact. In order to investigate the damage, it was necessary to determine what the encountered wave conditions were. because the probable time of damage was at night, with no visual observations available, as well as because of the large variations in reported conditions, it was decided that other methods would be investigated to determine the actual conditions encountered. Four data sources were used in an attempt to determine the encountered wave conditions. This paper describ.s.the data sources, the comparison of the data, and the conclusion that, while severe, the conditions are not likely to represent the lifetime maximum for design.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Undersea technologies in the former soviet Union

引用

NAVAL ENGINEERs JOURNAL 1995年第6期107卷 85-92页

作者： DeHaemer, DJ Dr. Michael J. DeHaemer:is Director of the World Technology Evaluation Center and the Japanese Technology Evaluation Center at Loyola College in Baltimore. He has directed more than a dozen studies of technologies in foreign countries under the sponsorship of the National Science Foundation ARPA Departments of Energy and Commerce and other agencies. He has a continuing interest in assessing foreign technologies in comparison to the United States.—-On the faculty of the Sellinger School of Business at Loyola College Dr. DeHaemer is a former department chairman and an associate professor of information systems and decision sciences. He teaches the strategic use of information technology and human-computer interface design. His research includes user performance with automated speech recognition systems for computers and business applications of artificial intelligence. Dr. DeHaemer completed an earlier career as a submarine officer including command of a ballistic missile submarine. He holds a B.S. degree from the University of Notre Dame and a Master's degree in Operations Analysis from the Naval Postgraduate School. He has an M.B.A. an M.S. in Industrial Engineering and a Ph.D. in Management Information Systems from Rensselaer Polytechnic Institute.

A team of experts, assembled by the World Technology Evaluation Center, visited twenty-five locations in Russia and Ukraine to observe the state of undersea technologies. Academic sites, b.s.c research institutes, industrial development laboratories, and oceanographic operating b.s.s were visited. The report highlights specific technologies that support research submersibles;and critiques the strengths and weaknesses of the ocean technologies establishment. Russia and Ukraine were found to have a number of strengths, especially in test facilities, a large fleet of surface and submersible research vessels, and highly educated and qualified engineers and scientists. Although political and economic conditions need to be over-come, there is motivation for many cooperative commercial or research ventures with both government institutes and new private companies in Russia and Ukraine.

关键词： Ocean engineering

来源：评论

学校读者我要写书评

暂无评论

A sophisticated Ground Water Analytical Tool

引用

Groundwater Monitoring & Remediation 1995年第2期15卷 134-139页

作者： Tonjes, David J. Heil, James H. black, John A. David J. Tonjes is a doctoral candidate in coastal oceanography at the Marine Sciences Research Center University at Stony Brook through its Waste Management Institute (Waste Management Institute Marine Sciences Research Center University at Stony Brook 11794–5000). Under a grant from the Town Board he is a technical adviser to the commissioner of waste management of the town of Brookhaven New York in solid waste planning regulatory compliance and environmental site monitoring. Tonjes has a B.A. in liberal arts from St. John's College an M.S. in computer science from New York Institute of Technology and an M.S. in technological systems management from the University at Stony Brook. James H. Heil is commissioner of waste management for the town of Brookhaven (Department of Waste Management Town of Brookhaven 3233 Rte. 112 Medford NY 11763). Heil received a B.S. from Manhattan College and an M.S. from New York University in civil engineering and is a licensed professional engineer in New York. He is a former president of the New York State Solid Waste Management Association. John A. Black is the coordinator of the environmental science program at Suffolk County Community College (Environmental Science Program Suffolk County Community College Selden NY 11784). He is currently the chair of the Ecology Committee of the Pine Barrens Advisory Committee for Suffolk County and is a member of the Suffolk County Pine Barrens Review Commission. Black received a B.S. in chemistry from Adephi University an M.S. in public administration from the University at Stony Book an M. S. from Hofstra University and a Ph. D. from Adlephi in marine sciences.

stiff diagrams arc a multivariate method of analysis used to describe the chemical state of ground water. The use of stiff diagrams to describe multiconstituent contamination sites, such as landfills, has distinct advantages over single constituent analyses. Problems associated with traditional stiff diagram analyses, such as diagram attentuation, can be addressed by allowing the scale of the diagram to vary with the ionic strength of the analyzed sample. The use of these sliding scale stiff diagrams reveals the chemical slate of the ground water over wide ranges of constituent concentrations and thus allows for sensitive and sophisticated depictions of complicated contamination sites in a fashion that is extremely difficult to replicate with single constituent analyses. This approach has possible applications for understanding and tracing the mixing and chemical changes in uncontaminated settings. Copyright © 1995, Wiley blackwell. All rights reserved

关键词：

来源：评论

学校读者我要写书评

暂无评论

THE ADVANCED TOMAHAWK WEAPONs CONTROL-system FOR sUbMARINEs

引用

NAVAL ENGINEERs JOURNAL 1995年第3期107卷 35-40页

作者： bAEHR, Js LCdr. Joseph S. Baehr:is serving as the Submarine Advanced Systems Engineer tor the TOMAHAWK Weapons Control System Program Office PMA-282. He received his B.S. degree in Systems Engineering from the U.S. Naval Academy in 1983 and his M.S. degree in Electrical Engineering from the Naval Post Graduate School in 1990. He has served in several positions on board Sturgeon and Los Angeles class nuclear fast attack submarines including three years as Combat Systems Officer on USS Helena (SSN 725). He has been in his current assignment at the Cruise Missiles Project since June 1994 with primary responsibility for the Submarine ATWCS program.

The Advanced TOMAHAWK Weapons Control system (ATWCs) is being developed to support current and future tactical cruise missiles onboard navy ships. The ATWCs utilizes the Navy's standard Tactical Advanced computer (TAC) 3 components and commercial standard Local Area Networks (LANs) to provide a flexible, rob.s. system with excellent growth potential. Aggressive use of systems engineering principles has refined the system design so that it is adaptable to various Navy platforms. An excellent example of the success in meeting this design goal is the submarine ATWCs. The primary data pathway for ATWCs is a Fiber Distributed Data Interface (FDDI) LAN connecting the four TAC 3 processors. Existing Common Display Consoles (CDCs) are used for display and control of the TAC 3 processors. The submarine ATWCs builds on software already developed for surface ships. The open system architecture of this software is b.s.d on computer software Configuration Items (CsCIs) and several are obtained from other programs. Direct weapons interface in the Combat Control system (CCs) provides optimum efficiency in weapons control while gaining the functionality advantages of ATWCs. This paper describ.s.the systems engineering solutions for both software and hardware to achieve a modern cruise missile weapons control capability for submarines utilizing non-development items (NDI), Commercial Off The shelf (COTs) technology LANs and open system architecture.

关键词：

来源：评论

学校读者我要写书评

暂无评论

ACOUsTIC CHARACTERIsTICs OF T-AGOs-19 CLAss sWATH sHIPs

引用

NAVAL ENGINEERs JOURNAL 1995年第3期107卷 95-119页

作者： YANKAsKAs, K sLOTWINsKI, T He was previously a test engineer at CDNSWC where he developed acoustic testing and test procedures and conducted numerous acoustic tests for the fleet. The platforms involved included T-AGOS 39. CG 47.DD 963 FFG 7. FF 1052. SSN 637 and SSBN 640 Classes. He earned his B.S. in Ocean Engi-meringfrom Florida Atlantic University and his B.S. in Biology from Rensselaer Polytechnic Institute. He received a Meritorious Civilian Service Award for his work on SWATH Acoustics and integrated testing. Thomas C. Slotwinski:is the Manager of the Rockville Maryland office of Applied Measurement Systems Inc. He provides technical support for surface ship silencing programs for NAVSEA 03T and submarine acoustic measurement programs for CDNSWC. Mr. Sbtwinski has over 25 years experience in RDT &E programs related to submarine and surface ship silencing ship acoustic and vibration characteristics ship design sonar system engineering and acoustic measurement and analysis programs. He has participated extensively in at-sea measurements and acoustic design experiments for all operational classes of submarines most classes of ASW surface combatants and a number of special purpose surface ships. He has developed and evaluated acoustic and vibration performance goals for specific systems ship components and total ship characteristics. Mr. Slotwinski has conducted several inter-disciplinary efforts to identify noise sources mechanisms and propagation characteristics on several different surface ship and submarine platforms. This effort has been primarily in support of the TRIDENT and SEAWOLF submarine programs and the T-AGOS 39 and T-AGOS 19 surface ship programs. Mr. Slotwinski has B.S. and M.S. degrees in Physics from John Carroll University. After receiving his M.S. degree in 1969 he was employed by the Naval Ship Research and Development Center (now CDNSWC) in Carderock MD.

small Waterplane Twin Hull (sWATH) vessels exhibit superior seakeeping capabilities in rough water, which render them more capable than monohull ships for many missions. sWATH vessels are currently in use for a variety of acoustic missions, including oceanographic research and surveillance, which render it necessary to assess and minimize underwater noise generated by the ship. In addition, potential future missions such as anti-submarine warfare require the development of quiet sWATH ships. A wide range of acoustic and vibration data are needed to support the design and construction of sWATH ships with acoustic missions. A number of acoustic tests and trials have been conducted on UsNs Victorious (T-AGOs 19) Class ships. During these tests, several innovative acoustic and vibration measurement and analysis techniques were used to identify, investigate and correct a number of acoustic deficiencies. This paper provides an overview of these trials and the acoustic deficiency correction process, Personnel from a variety of organizations worked as a focused team to provide the technical and implementable solutions necessary to improve the acoustic characteristics of the T-AGOs 19 class. Additionally, the results of a diagnostic acoustic trial conducted on the Victorious are prepared and discussed in terms of the unique platform acoustic characteristics found on sWATH ships.

关键词：

来源：评论

学校读者我要写书评

暂无评论

AUTOMATED OPPOsING FORCEs FOR TRAINING sIMULATIONs

引用

NAVAL ENGINEERs JOURNAL 1995年第3期107卷 245-252页

作者： ANTON, Ps MCADOW, KL sMITH, Db LEHNER, PE sHARP, MA Dr. Philip S. Anton:is currently the Terhnology Area Manager of Modeling and Reasoning in the MITRE Advanced Information Technologies Center. His research at MITRE has included behavioral models of military doctrine and command environmental modeling and reasoning for command forces and intelligent simulations of military entities. His other interests include neural networks artificial intelligence and intelligent agents. Dr. Anton received a U.S. degree in Computer Engineering from UCLA and an M.S. degree and a Ph.D in Computational Neuroscience from the University of California. Irvine After finishing nuclear power training Mr. McAdow served as an Engineering Department Division Officer on USS Mariano G. Vallejo (SSBN 658). He then worked as a civilian far the Naval Coastal Systems Center and then far Martin Marietta Aero and Naval Systems in the development of various submarine systems and unmanned undersea vehicles. David Smith:has been a member of the technical staff at MITRE s Advanced Information Technologies center since 1993. He has a B.S. degree in Computer Science and Mathematics from Albright College and an M.S. degree in Information and Computer Science from the Georgia Institute of Technology. Dr. Paul Lehner:is a part-time Principal Scientist in the MITRE Advanced Information Technologies Center. In addition. Dr. Lehner is an Associate Professor of Systems Engineering at George Mason University. His research at MITRE has included automated planning and scheduling adversarial planning and reasoning against uncertainty. Dr. Lehner received a B.S. degree in Psychology from Bethany College. He also holds M.S. degrees in Psychology and Mathematics and a Ph.D. in Mathematical Psychology from the University of Michigan. Prior to his current employment at MITRE and at George Mason University Dr. Lehner served as the Technical Director of the Decision Sciences Section at PAR Government Systems Corporation. After finishing nuclear power training Cdr. Sharp served as an Engineering Department Divisi

Providing realistic opposing forces is critical to the successful use of military training simulations. Unfortunately, a number of issues can make the manual control of realistic opposing forces difficult or unattainable, This paper explores these issues while discussing how Automatic Interactive Targets (AITs) can assist Training Exercise Controllers (TECs) in providing validated and realistic opposing forces in highly interactive situations. The features of the prototype Remote AIT Processing system (RAPs) are used to demonstrate how an AIT system can be designed to meet TEC requirements for automated entities, RAPs can provide remote control of AITs for existing or new systems while providing sufficient features to allow a TEC to appropriately select and control AITs for individual training exercises and crew proficiencies.

关键词：

来源：评论

学校读者我要写书评

暂无评论

LAsER-b.s.D 3-D VOLUMETRIC DIsPLAY system - THE IMPROVED 2ND GENERATION

引用

NAVAL ENGINEERs JOURNAL 1995年第3期107卷 233-243页

作者： sOLTAN, P TRIAs, J DAHLKE, W LAsHER, M MCDONALD, M John A. Trias:received his Bachelor's degree in Physical Science from the University of California at Berkeley in 1956. In the 1960s he worked on the synthesis of ruby and sapphire crystals for lasers. He has been with the Naval Ocean Systems Center (NOSC—now NR aD) since 1964. He worked with the development of new rare-earth chelates for dye lasers which were used in prototype optical communication projects at NOSC. In 1981. he developed and demonstrated the first laser-addressed liquid crystal light valve large-screen projection display system operating at video scan rates. His work as project leader for the Command Control Technology Task at NR aD involves advancing laser light valve display technology. His current interests are in the development of direct-view high-resolution laser displays using acousto-optic devices and in 3-D volumetric displays using high-speed acousto-optic scanning and a nonmoving volume screen. Mr. Trias has 15 patents and has authored 35 technical publications Malvyn C. McDonald:received both his B.S. and M.S. degrees in Mechanical Engineering in 1971 and 1976 respectively from San Diego State University. He has twenty-three years of engineering experience with professional emphasis on design and development of shipboard submarine and shore-based communication systems electronics and optics packaging systems and structural and dynamic mechanical systems. He is experienced in development of systems from the conceptual stage to pre-production prototypes including shock and vibration analyses fabrication testing and evaluation and engineering documentation.

NRaD, the RDT&E Division of the Naval Command, Control and Ocean surveillance Center (NCCOsC), has developed its second generation device for displaying data, information and scenes in a three-dimensional volume of image space. The device incorporates a 36-inch diameter double helix that spins at approximately 10 revolutions per second, providing a means to address a cylindrical volume. Under computer control, a laser beam is directed to illuminate certain discrete volume points (voxels) on the helix needed to create a scene. The laser light scatters from the surface of the helix, so, to the observer, each voxel appears to emanate from specific points in space. Each point has x-y coordinates determined by the position of the laser beam, and a z coordinate determined by the height of the point on the helical surface. Any point within the cylindrical image volume can be computer-addressed to appropriately synchronize the laser beam, the Acousto-Optic (AO) scanner and the phase of the helix, as shown in figures 1 and 8. Using a novel Acousto-Optic (AO) Random-Access scanner, up to 40 thousand laser-generated voxels refreshed at 20 Hz per color are projected onto the reflective surface of the rotating helix. (This is about 10 times more than the current state of the art.) The higher resolution allows improved color images, updated in real time, for group viewing with the naked eye (see the optical head in figure 8).

关键词：

来源：评论

学校读者我要写书评

暂无评论

IsDN LOOP EXTENsION UsING A MID-sPAN AMPLIFIER

引用

INTERNATIONAL JOURNAL OF COMMUNICATION systems 1995年第3期8卷 219-224页

作者： ERKER, GJ DODDs, DE KRZYMIEN, WA David E. Dodds was born in Saskatoon Canada in 1945. He received the B. Eng. and MSc. degrees from the University of Saskatchewan in 1966 and 1968 respectively. He worked with Bell Northern Research (Ottawa) on PBX design in 1969 1972 and 1978. Since 1969 he has been with the University of Saskatchewan where he is currently Professor of Electrical Engineering. He teaches courses in electronics and communications and also presents short courses on the fundamentals of telephony. Current research interests are in data transmission signal processing architecture and frame synchronization for PCM and spread spectrum systems. He has been granted five patents relating to commercial products in delta-modulation telephone line interfacing and computer data transmission. In 1986 he was on sabbatical leave at BNR Inc. and worked with an ANSI committee on the standardization of FDDI-II a combined voice and data system. Mr. Dodds is a Registered Consulting Engineer in Saskatchewan. Witold A. Krzyden received his MSc. (Eng.) and Ph.D. degrees (both in Electrical Engineering) in 1970 and 1978 respectively from the Poznan Technical University in Poznan Poland. He was awarded the Minister's of Science and Technology Prize of Excellence for his Ph.D. thesis. From 1970 to 1978 he was a Research Engineer and Teaching Assistant and then from 1978 to 1980 an Assistant Professor of Electrical Engineering at the Poznan Technical University. In 1980 he won a Dutch Government Research Fellowship at the Twente University of Technology in Enschede the Netherlands for the year of 1980/1981. In the following year of 1981/82 he was a Research Assistant Professor there. From 1982 to 1986 he was an Assistant Professor of Electrical Engineering at Lakehead University in Thunder Bay Ontario Canada. In 1986 he joined the Univeristy of Alberta and Alberta Telecommunications Research Centre (now Telecommunications Research Laboratories or TRLabs) as an Associate Professor of Electrical Engineering. Currently he is a Professor of E

The 5.5 km range of the b.s.c rate IsDN loop has been extended by using a negative impedance amplifier and by using a 2 wire/4 wire (2w/4w) amplifier. The negative impedance amplifier extends the range of the loop by 1.0 km, whereas the 2w/4w amplifier extends the range by 1.5 km at the expense of increased complexity. As part of the amplifer design, a resistor/capacitor network has been developed which closely matches the characteristic impedance of telephone cable. Error rate tests have been conducted using various lengths of cable and an operating IsDN line.

关键词： IsDN PHYsICAL LAYER b.s.C RATE LOOP RANGE EXTENsION

来源：评论

学校读者我要写书评

暂无评论

A LARGE-sCALE MULTIPLE-ACCEss METHOD FOR VIDEO-ON-DEMAND systems

引用

systems AND computers IN JAPAN 1995年第8期26卷 12-21页

作者： sAKAMOTO, H NIsHIMURA, K NAKANO, H Member NTT Human Interface Laboratories Musashino Japan 180 Hidelti Sakamoto:received his B.E. and M.E. degrees in Electrical Engineering from Osaka University in 1984 and 1986 respectively He joined NTT Laboratories in 1986 and has been engaged in research and development of message communication and processing systems and HDTV high-speed videotex systems. He is a Senior Research Engineer in the Multimedia Systems Laboratory of the NTT Human Interface Laboratories where he is currently developing multimedia-on-demand system architectures. He is a member of the IEEE Communications Society the ACM the Institute of Electronics Information and Communication Engineers of Japan and the Information Processing Society of Japan. Kamtoshi Nishimura:received his B.S. degree from Kumamoto University in 1973. He joined NTT Laboratories in 1973 and has been involved in the research and development of magnetic tape recording systems and optical recording systems. He is a Senior Research Engineer and Supervisor in the Multimedia Systems Laboratory of the NIT Human Interface Laboratories where he is currently researching video-on-demand systems. He is a member of the Institute of Electronics Information and Communication Engineers of Japan and the Japan Society of Applied Physics. Members Hitaka Nakano:received his Ph.D. from the University of Tokyo in 1977. He joined NTT Laboratories in 1977 and has been engaged in research and development of picture production systems and videotex systems. He is a Senior Research Engineer Supervisor and Research Group Leader in the Multimedia Systems Laboratory of the NTT Human Interface Laboratories where he is currently researching and developing video information systems. He is a member of the Institute of Electronics Information and Communication Engineers of Japan.

A multiple-access method is proposed for simultaneously providing video data to more than 100 terminals in a video-on-demand system. The proposed method divides up each video program into segments, stores the segments on multiple disk drives, and performs time-division-multiplex reading b.s.d on the time-slot sequences for each dish drive that are periodically phase shifted with respect to each other, This method features: 1) theoretical limit on the maximum number of multiple accesses that can be implemented, and straightforward upscaling of the maximum number of multiple accesses because the amount of buffer memory needed for each terminalis fixed;2) no request loss, even when many terminals request the same program because the load for reading each video program is always distributed across all the disk drives;and 3) system control that guarantees read-request response times within a specified value by allowing the skipping of a very small amount of leading information in each video program. Numerical examples show that this access method makes it possible to design a system having no request losses and a guaranteed response time within one second, even for simultaneous accesses by 900 terminals.

关键词： VIDEO-ON-DEMAND MULTIPLE ACCEss DIsTRIbUTED sTORAGE CONTROL REsPONsE TIME CONTROL

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：