系统发生的

The retention system fails if it cannot support the mechanical loads or if the maximum instantaneous deflection of the retention system exceeds 30 mm.

保留系统发生故障，如果它不能支持的机械负荷或瞬时最大的偏转保留系统超过30毫米。

By means of dimensionless analysis an experimental correlation for predicting stability of the system is obtained and the stability threshold diagrams have been found.

根据试验和理论分析结果，提出了消除系统的不稳定，提高系统稳定性及防止脉动发生的措施。

However, keywords can only represent the simple content, which easily dissever the relevancy of the content The deep-content representation and application are not developed, so semantic navigation is not satisfied at present. Time mechanism is a kind of navigation mechanisms that uses time for the signpost, and determines navigation route according to the time of occurrence.

时序机制指以时间为导航路标、根据事物发生的时间顺序确定访问路径的一种导航机制，主要应用于WWW信息空间中以时问顺序为线索组织信息的结构中；空间机制指依据对象间的空间关联，为用户指引路径，提供导航路标的机制，应用于具有空间特征的结构中；社会机制指利用先行者的经验、建议为后来者指引路径的行为，原来主要应用在推荐系统、协作系统中，目前已经在主流的信息检索系统中得到了应用，如在CNKl知识网络服务平台（CNS 5.0）中的应用。

Symbolic Dynamics has the advantage of being simple and to the point, can be used to analyze the essence of chaos-happening in the energy system; Melnicov Method can be used to study the mechanism of chaos-happening after system was perturbed. Chapter thirteen briefly introduced how to use the two methods to study chaos in a life energy system.

符号动力学以其简单和"粗粒化"的优点，抓住了能量系统中混沌发生的本质规律进行分析，而梅尔尼科夫方法则专门研究能量系统在受到扰动后产生混沌的机制，本文简要介绍了如何运用两种方法研究生命能量系统中的混沌并例举了简短的实例。

Most economic systems are reflexive – what happens is influenced by how we perceive what will happen.

多数经济系统具有反射作用：我们认为会发生的情况会对真正发生的情况产生影响。

Fire is significant among disasters in urban area. The occuring frequency of fire is the highest among all kinds of disasters, and the loss due to fire is about five times of that due to earthquake. At the present, the tasks such as searching fire control information, disposing alarm telephones and make dispatch, are still accomplished in manual manner domestically. Current commanding system of fire fighting drops behind the development of cities, so that the setout time of fire companies is delayed.

中文题名城市消防指挥系统中的GIS和虚拟现实应用技术副题名外文题名 The application technology of GIS and VR in commanding system of fire fighting for urban area 论文作者许云导师任爱珠教授学科专业防灾减灾工程及防护工程研究领域\研究方向学位级别博士学位授予单位清华大学学位授予日期2002 论文页码总数115页关键词地理信息系统虚拟现实消防指挥系统火灾馆藏号BSLW /2003 /TU998.1 /4 火灾是城市灾害中的重要灾种，其发生频度居各灾种之首，造成的直接损失约为地震的五倍。

Results of computations have been proved by road tests. Measures to eliminate shimmy are proposed.

仿真研究还从能量观点阐明了摆振发生的物理本质以及系统发生强迫振动或自激振动的内在原因。

Faults of ball milling system in power plant are analyzed by means of fault tree analysis. A fault tree is established that contains faults of ball mill, coal feeder, mill exhauster and separator. The minimal cut set is figured out. The cause for the faults are detailed.

利用故障树分析法对火力发电厂制粉系统的常见故障进行了分析研究，建立了制粉系统的故障树，涵盖了球磨机、给煤机、排粉机、粗细粉分离器的常见故障，求出了其最小割集，给出了制粉系统发生故障的原因及导致故障各种原因组合的可能性。

It is presented in this paper that an analysis is done on maloperation of WXB-11 microprocessor based HF protection at transitional fault in Heilongjiang 220kV network in recent years.

文章对黑龙江省220kV电网近几年WXB-11型微机高频保护在系统发生转换性故障时发生误动进行了分析，说明了误动的原因，并提出了解决的方法。

While mass extinctions are taking place in natural ecosystems, the same has taken place in domesticated seeds.

而大规模的灭绝事件发生的自然生态系统，同时已发生了驯化种子。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。