失效的

In the first part, it is concluded that load is the most fundamentally reason leading to disablement of die after experimentation research, manufacture experience and stat.

第一部分是在锻模的实验研究、生产经验和调查统计的基础上，分析其失效形式和失效机理，得出引起锻模失效的最根本原因是负荷。

LTD. Analysis of invalidation of the two MOOG valves was carried out with the help of advanced apparatus and profound expertise in this area at Fudan University. Our research reveals that poor quality of the valve surface is the root cause for invalidation. A detailed description of the method used in analyzing the invalidation of electro hydraulic servo valve is presented in this article. This research demonstrates that academic institutes can play a significant role to solve engineering problems by leveraging their existing resources.

我们利用复旦大学先进的表征仪器和工具以及积累的大量失效分析案例的丰富经验，对二个失效的MOOG阀的阀体进行解剖分析，判明了失效的真正起因不是液压油质量问题，而是阀滑表面质量存在问题，论文详细论述了我们采用的表征分析方法从宏观上、微观上对电液伺服阀阀的失效行为进行了全面分析的过程，是科研教学机构利用自身资源解决实际问题的一次有效的实践，具有较强的科学意义。

The normal plate and fail plate in the same failure battery （12 V／7 Ah）were compared and analyzed. The results of SEM observation show that the surface structure of normal plates and fail plates were different.

此外，对同一失效电池中不同单格分别取正常的极板及失效的极板进行比较分析，扫描电镜结果显示：正常的极板及失效的极板的表面结构不同。

The calculating formula for fatigue reliability of single component was deduced. A criterion of fatigue failure of integral platform and the method for determining key failure mode of platform were suggested,and the computing method for failure probability of integral platform was presented.

在此基础上给出了单个构件的疲劳可靠性计算公式，提出了平台整体疲劳失效的简化判断依据和平台关键失效模式的确定方法，并给出了平台整体失效概率的计算方法。

In brief, these relevant fundamental made by western scholars could by traced in three aspects: first, to define the essential connotation of "government voidance"; second, to analyze its manifestation and cause; third, to put forward a series of remedy measures.

概括地讲，西方学者对政府失效有关理论的阐述，从三个方面进行：界定政府失效的基本内涵；分析政府失效表现及原因；提出一系列补救政府失效的措施。

Tear-down analysis indicates that for VRLA battery, water loss ,negative plate sulphation and positive active material softening are the main causes of failure.

通过对失效的VRLA电池的解剖分析，电池失水、负极板硫酸盐化和正极板活性物质软化是导致VRLA失效的主要原因，介绍了一种使失效电池容量恢复的方法，并对该方法的有效性机理进行了简单分析。

This article studies the connotation of invalidation of entrust and acquits the system s function in regulating the entrust , the factors of invalidation of entrust and the harnessing of the invalidation .

研究了信托行为失效的内涵及表现，制度在规范信托行为中的作用，信托行为失效产生的制度运行机理以及从制度的角度寻求对信托行为失效的治理。

As a result, the conclusion on boiler tube failures mod...

取得以下研究成果：(1)对受热面管的主要失效模式进行了分类，针对工业锅炉和电站锅炉的不同特点，系统地研究总结各种失效的机理，为建立受热面管的失效预防措施提供了理论指导。

Combined with the macro-morphology appearance analysis and working conditions of failure casing, the paper reached a conclusion that it is due to the impact and friction which come from the drill tools made the fatigue cracks formation on the casing thread root, and eventually leading to casing rupture failure, the material defects in failure casing accelerated crack initiation and growth.

摘 要：某井在钻井作业过程中，发生了上层Φ244.5 mm技术套管断裂失效事故，为了分析事故原因，对失效套管材料的化学成分、金相组织和力学性能进行了检测分析，结合套管失效形貌的宏观分析和套管使用过程中的现场工况分析，得出了套管螺纹发生断裂失效的原因是钻具对套管的撞击、摩擦，使套管螺纹根部产生疲劳裂纹，最终导致套管断裂失效，失效套管的材料缺陷加速了裂纹的萌生和扩展。

The key to preve n tion and reduction of the drill string failure lies in prevention.For this reaso n,in view of the different stressed characteristics of the different sections of the drill string in borehole,the research is conducted by dividing the drill st ring into four failure sections,namely,the section at the wellhead and the secti ons at the upper part,vicinity and lower part of the zero stress point,to inves tigate the essence and basic reason of the failure,and to put forward scientific and feasible preventing measures,thus,being advantageous to complete and system atic prevention and forecast of the drill string failure.

防止和减少钻具失效，关键在预防，为此，根据钻柱各部分在井内的受力特点不同将其划分为钻柱井口处、零应力点上部、零应力点附近、零应力点下部四个钻具失效段进行研究，查出其失效的实质及根本原因，提出科学可行的防范措施，有利于全面系统地预防预测钻具失效。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。