The forecasting methods of concrete surplus work ing life within the concrete structure ， which were published in foreign documents ， are investigated in this paper with comprehensive discussion and analysis in details so as to provide reference for domestic engineering 探讨和介绍了国外文献中所载的混凝土结构中混凝土剩余工作寿命的各种预测方法，并对各种方法进行了较详细的综合论述和分析，以供国内工程设计人员参考。
Pdm ( product data management ) is a tool that helps engineers and others manage both data and the product development process , pdm system keep track of the masses of data and information required to design , manufacture , and then support and maintain products Pdm ( productdatamanagement )是工程设计人员及其它人员用于管理产品数据和产品开发过程的工具， pdm主要管理的内容是在产品设计、制造及支持维护中出现的大量数据和信息。
Abstract : the forecasting methods of concrete surplus work ing life within the concrete structure ， which were published in foreign documents ， are investigated in this paper with comprehensive discussion and analysis in details so as to provide reference for domestic engineering 文摘:探讨和介绍了国外文献中所载的混凝土结构中混凝土剩余工作寿命的各种预测方法，并对各种方法进行了较详细的综合论述和分析，以供国内工程设计人员参考。
Abstract : this article sums up 6 calculation steps to simplify complicated hydraulic computing of indoor pipeline network for automatic water spray fire - extinguishing system . the results comply with engineering practice ， and can make a reference for engineers 文摘:针对高层建筑湿式自动喷水灭火系统室内管网的水力计算较复杂这一问题,总结提出六个计算步骤,既能满足安全使用要求,又能简化计算过程,结果符合工程实际,可供工程设计人员参考。
Research methods of expansion joint ' s mode and harmonic response were systemically studied and a fea modeling & post process software for project designer was built in this article . and it may contribute much to theory and project practice for expansion joint 本文工作不仅较系统地完成了波纹管膨胀节振动模态与响应分析方法的研究，还为工程设计人员提供了基于参数化的有限元建模及后处理软件，具有一定的理论意义和重要的工程应用价值。
Because of lots of factors is instable , how to specify the bearing capacity of the piles properly and make good economic efficiency is the concerned problem for the designer . artificial neural network is one of the efficient information processing method i n studying t he s ophisticated sy stems 由于影响单桩极限承载力的因素很多且不稳定，合理地确定桩的极限承载力，充分提高桩基的经济技术效益，始终是工程设计人员和施工人员十分关心的问题。
The implementation of decomposition optimization and the integration analysis of msc / nastran in optimization shorten the computing time of optimization , decrease the work intensity of designer and improve optimization efficiency greatly . furthermore , visualization is realized by setting the menu into patran 层次分解优化方法的实现和msc / nastran在优化中的集成分析，缩短了优化计算时间，降低了工程设计人员的工作强度，大大提高了优化设计效率。
Analyzing the composite foundation bearing capacity reduction coefficient of soil among piles by data gathering from practice engineering ; providing some advice and a regional experimental extent of selecting the bearing capacity reduction coefficient of soil among piles for designing composite foundation with cfg piles in loess area according to investigating results , with which give the designer a material to consult 根据实际工程中采集的实验数据，对复合地基桩间土承载力折减系数进行了讨论分析，根据实验研究结果，给出了黄土地区的cfg桩复合地基设计中桩间土承载力折减系数的一个区域性的经验取值范围，并对cfg桩复合地基的设计提出了一些建议，可供工程设计人员参考。
In the recent years , the number of the drilled grouting pile used in china exceeds 1000 000 per year . the depth of the pile under the earth is being to 104 meter . in research of the characteristic of the bearing capacity of the piles , how to specify the bearing capacity and the settlement is the key . because of lots of factors is insable , how to specify the bearing capacity of the piles properly and make good economic efficiency is the concerned problem to the designer 近年来，我国应用钻孔灌注桩堪称世界之最，超过100万根年，桩的埋深已达104米。在桩基的承载性状研究中，确定单桩承载力和沉降是重点。由于影响单桩极限承载力的因素很多且不稳定，合理地确定桩的极限承载力，充分提高桩基的经济技术效益，始终是工程设计人员和施工人员十分关心的问题。
It ’ s very attractive to optimize the balance transformers for their charming profits , enhanced total performance , lowered power cost , and manufacture cost , therefore more and more researcher focus on it . this dissertation tries its best to develop a satisfactory optimization design method of the impedance - matching balance transformers 平衡变压器的优化设计对于降低变压器制造成本、提高整体性能、增强变压器制造厂的竞争实力以及节能降耗,建设“绿色”节约型社会都有着重大意义,因而越来越受到有关专家、学者以及工程设计人员的关注和重视。
