失效的

Considering the complex influence factors for the failure of drill stem,an analytic model for failure of drill stem based on support vector machine and cluster analysis theory was established.

针对钻具失效影响因素比较复杂的问题，建立了基于支持向量机和聚类分析理论的钻具失效原因分析模型。

A five-story frame building's displacement and energy response are discussed under three different types earthquake waves.

对比了位移破坏准则与双指标破坏准则在判断结构失效时的差异以及不同双指标破坏模型在评价结构失效时的差异。

Finally, EM algorithm was used to statistical analysis for zero-failure data, and to estimate the exponential distribution's parameter.

最后将EM算法推广到无失效数据情形下，得出无失效数据下的指数分布平均寿命的一个估计。

In order to clarify the type, the causes and the mechanism of the sealing failure, and the further improve the working life of the seal rings of drilling mud pump plunger, this paper analyzed the seal failure of myriameter drilling mud pump plunger.

为了弄清高压钻井泥浆泵柱塞密封圈的失效形式、原因及机理，进一步提高钻井泥浆泵柱塞密封圈的寿命，对万米钻井泥浆泵柱塞密封失效分析。

Equally as important is to evaluate the failures that occur at each of these limits to determine if each of the failures found were accelerated to failure or if there were any failures that were due wearout or overstress.

同样重要的是评估不同极限下的失效或者是此应力条件下失效是否是因为过应力或者磨耗产生。

The failure mechanism and service sttaus quo of hot piercer point in seamless steel tube were analyzed and its failure was mainly caused by piercer point collapsing nose, sticking steel and cracking.

对穿无缝钢管热穿孔顶头的失效机制和使用状况进行了分析研究，认为穿孔顶头的失效形式主要表现为顶头塌鼻、粘钢、开裂。

Reliability model in series of motor driving system in vehicle was established.

直流母线支撑电容、大功率电子器件、控制电路、轴承和绝缘的失效是电动汽车电机驱动系统的主要失效模式。

Why inoculation point stressed Doctor candy vaccine polio after taking half an hour not to drink hot water or breast-feeding was mainly due to candy are live attenuated vaccines, if sent to serve with warm water will inevitably lead to failure of inactivated vaccine, which is why We have seen many of the Vaccine Inoculation point out from the refrigerator and placed on ice floe, and this is what we usually have to go through the vaccine cold chain system, the only way to ensure the vaccine will not be denatured failure.

为什么接种点医生强调服食脊灰糖丸疫苗后半小时内不要喝热开水或者喂奶，主要是由于糖丸是减毒活疫苗，如果用温水送服必然导致疫苗灭活失效，这就是为什么我们见到许多接种点的疫苗要从冰箱拿出来，并且放在冰排，这就是我们通常所说的疫苗要经过冷链系统，只有这样才能保证疫苗不会变性失效。

The paper introduces in brief the service condition and invalidation type of chain in cement clinker apron converyor, and gives an overall analysis of wearing-out failure principle of the chain.

简要介绍了裙板输送机用水泥熟料链条的服役工况和失效形式；全面分析了该链条的磨损失效机理。

Basing on failure mode and mechanism analysis of power plant boiler tubes, the author built the failure models and estimated their remaining life; and then, with the theory of fault diagnosis and other relatable theories, the author established the condition-based maintenance system.

本文通过对电站四管失效方式和机理的分析，建立失效模型，估算出管道剩余寿命；结合故障诊断等相关理论，对于锅炉四管状态检修系统的建立进行了研究。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐