系统发生

With this rule, the system insures that the whole range between the UCL and LCL will be 3% above the mean to guarantee that in more than 99.8 % of all cases the inventory will not run in a backorder situation.

应用这个规则，如果确保系统的管理上限和下限值都高于平均值3个百分点的话，那么系统就能够确保在99.8%的情况下不会发生缺货的现象。

The conclusion is that the building of hydrostation will change not only the amount and or of river ecosystem services ,but also the accepter of these services.And further more,enormous benefits gained from hydroelectricity is at the price of the decrease even the vanishment of some ecosystem sersvices and the resulted complex social and economic problems.

研究认为，水电站建设使河流生态系统提供的各项服务的量、形式以及服务对象等都发生了巨大的变化和转移，而且水电巨大经济效益的产生是以部分"廉价"享用的生态系统服务的降低或丧失以及由此引发的错综复杂的社会、经济问题为代价的。

Besides, the most important function of the network monitoring system develop by this research is different with other ones, which have been used: he/she can use other PC, which have authorized by Server PC, to modify the Server PC applications, there are many functions include: test software and hardware remotely, debug remotely and execute application remotely, etc.. Anyway, when problems happen in Server PC, in most case we can fix problems by other PC. Users can arbitrary add/subtract functions and applications in order to improve efficiency of system, without modifying Distributed Data Acquest Module.

本研究所发展的监控系统，除了可在网页上浏览动态资料外，其与现有既存的网路监控系统最大的差异在於：可在任何一台经过授权的电脑修改伺服电脑的程式，其中包括：远端测试软硬体、远端故障排除、遥控启动程式；也就是说，当大部分情况发生时，人员不需要到达现场，即可将问题排除，且在不变更资料撷取模组等相关硬体的前提下，可在远端依现场的需要，任意的增加或删除伺服电脑的功能和程式，进而达到最佳的工作效率。

Chavent's research for matching the history of production in a field by use of optimal control theory and through the research for the space of the adjoint function, we have extended the theory of adjustment for the ease of a single-phase system to a double-phase one.

Chavent利用最优化理论研究油气藏生产动态拟合的基础上，通过对伴随函数空间的研究，将辨识理论由单重介质系统扩展至双重介质系统，并针对原方法多解，迭代中易发生逸出、振荡、仅收敛于局部极小等困难，重点研究和探讨了改善问题的适定性和加速算法的收敛性问题。

But in fact, the system of half-tracked air-cushion vehicle is over complicated. When the vehicle drives in an unknown soil, the parameters and structures of controlled member will change with load or disturbances. This system is nonlinear and time-variant, and it is very difficult to analyze its transfer function and state function quantitatively.

然而在实际工作中，由于本课题中的系统过于复杂，当行驶在未知土壤条件下时，被控对象往往随着载荷或干扰因素影响，其特性参数或结构发生改变，属于非线性和时变性的不确定系统，它的传递函数或状态方程难于用传统的定量分析方法加以实现。

The result showed that the strong storm followed by mesoscale squall line was primary cause of strong sandstorm producing, steps and ladders short wave trough of 500 hPa was great criterion triggering system for the mesoscale squall line producing, the essential dynamic condition was provided by distortion field and the mesoscale low pressure of 700 hPa for the strong sandstorm forming and maintaining in mid-west of Hexi Corridor, the deep vertical circulation development condition was basic power that urged squall line to occur and sand dust to curl up, which was provided for the deep convection development by superimposition of lifting movement before ground cold front and ascendant current of secondary circulation in upper air jet entrance region, temperature and the barometric gradient around the cold front was enlarged by enhancement of ground thermal low and temperature diurnalvariation of afternoon, by which essential thermal energy unstable condition was provided for the gale and strong sandstorm eruption, the strong sandstorm appeared in downstream of -200 m^2s^(-2) center of vertical helicity, the vertical helicity had good instruction significance for development of squall line and landing region of sandstorm, the mesoscale squall line occurred in unstable stratification, basic condition of potential energy transforming as kinetic energy was provided by strong unstable stratification for the strong sandstorm forming and developing.

结果表明：中尺度飑线所伴随的强风暴是产生强沙尘暴的主要原因；500 hPa阶梯短波槽是中尺度飑线产生的大尺度触发系统，河西走廊中西部700 hp变形场、中尺度低压为强沙尘暴形成和维持提供了必要的动力条件；地面冷锋前上升运动与高空急流入口区次级环流的上升气流的叠加，为深对流发展提供了深厚的垂直环流发展条件，是促使飑线发生和沙尘卷起的基本动力；地面热低压的加强和午后气温的日变化加大了冷锋前后的温度和气压梯度，为大风、强沙尘暴爆发提供了必要的热力不稳定条件；强沙尘暴出现在垂直螺旋度为－200平方公尺/s^2中心的下游，垂直螺旋度对飑线的发展和沙尘暴的落区具有较好的指示意义；中尺度飑线发生在不稳定层结内，较强的不稳定层结为强沙尘暴形成、发展提供了位能转化为动能的基本条件。

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。

Depending on how late in the project the incompatibility is discovered, debugging might take longer than it would have if integration had occurred earlier, program interfaces might have to be changed, or major parts of the system might have to be redesigned and reimplemented.

这种风险的发生取决于项目中的这种不兼容性多久才被发现，由于程序界面已经发生了变化，或者系统的主要部分已经被重新设计和重新实现了，相应的排错工作将非常困难和耗时。

Background: New studies showed that changes in the balance between haemostatic and antithrombotic processes, including a prethrombotic state might contribute to the development of atherosclerotic lesions which occured in hypertensive vascular complications. This may be one of the causes that satisfactory blood pressure reduction with antihypertensive drugs does not lead to an equal reduction in heart attacks and strokes. With the development of traditional presentation of blood coagulation, the role of tissue factor pathway has been emphasized.

中文题名原发性高血压患者组织因子途径变化与血栓前状态关系的临床与实验研究副题名外文题名 Clinical and experimental study of relation between changes of tissue factor pathway and prethrombotic state in hypertensive patients 论文作者张卫茹导师孙明教授学科专业内科学研究领域\研究方向学位级别博士学位授予单位中南大学学位授予日期2002 论文页码总数70页关键词血栓组织因子高血压馆藏号BSLW /2003 /R544 /3 背景：新近的研究表明，凝血与抗凝系统失衡所导致的血栓前状态与高血压并发症的发生关系密切，这可能是高血压病人虽经有效的降压治疗但发生心、脑、肾、血管并发症的危险仍很高的主要原因之一。

In the third chapter, Based on the Bloch equation and with the use of methoddevoloped in chapterl, the level shifts of two-level atom are calculated under theinteration of classical and quantized field. An analytic formula of level shift of atomin AC Zeeman effect is obtained.

从本章给出的计算方法中，还揭示了当一量子系统受到一与时间相关的微扰并发生跃迁时，微扰引起的能级移动是一个与跃迁同时发生的瞬态过程，跃迁和能级移动是同一过程的两个方面。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。