螺杆钻具外壳体是螺杆钻具的关键零部件，也是易失效件之一。
The shell of positive-displacement motors is the key component of down-hole motors, it is also a main vulnerable parts.
采用宏观、微观检验、化学成分分析等方法，对失效件进行了检测。
The failure components were examined by macro and microscopical analysis and so on.
结果发现，失效件的硅含量偏高、硬度值很不均匀，冲击韧度和伸长率远低于材质要求，因而导致脆断。
The results shows that the failure parts has high silicon content and uneven hardness , the impact toughness and elongation is far below the specification of the material.
对燃气轮机二级动叶片失效件进行了化学成分分析、金相组织观察、晶粒度测定、夹杂物检查及断口分析。
In this paper, the chemical contents, microstructure, inclusion, grain size and fracture analysis of the second grade gas turbine blade were investigated.
从动件运动时产生的冲击和振动会造成凸轮机构传动精度的降低，使凸轮传动系统产生失效。
Impact and vibration will reduce the precision of CAM mechanism, result in invalidation of CAM mechanism.
考虑到关键部件如反应堆冷却剂线和油井涂层不能出现问题，为了安全，并对失效做了最坏的分析，这类金属零件会得到优先更换。
Considering the critical components like reactor coolant lines and oil-well casings, the metal parts are subjected to prior replacement, for safety, with respect to a worst-case analysis of failure.
针对炼油、化工装置中应用广泛的换热器的失效问题，从腐蚀、密封件失效等方面入手，分析了换热器的失效原因。
Causes of failure are analyzed for heat exchangers widely applied in refining units and chemical units from the viewpoints of corrosion and sealing element failure.
反链接系统机制在不适合外链的文件上运转，同一文件将在6小时或者一个准确的链接（先到的那个）上失效。
The anti-hotlinking protection system used on files which are not eligible for hotlinking to uses links which expire after 6 hours or a certain number of connections (whichever comes first).
分析比较了在不同锻压设备上进行重型法兰叉类件锻造成形的特点，对其模具进行了优化设计和失效分析。
Forging forming of heavy flange and fork by different forging equipment has been analysed with die optimization and failure analysis for the purpose of higher productivity and lower die cost.
从外观上看橡胶件表面疏松、毛糙，失去弹性，从而使橡胶失效。
Rubber pieces from the exterior surface of osteoporosis, loss of flexibility, so that failure of rubber.
磨损是造成机械零部件失效的主要原因之一。
Wear is one of the major causes of machinery parts' failures.
磨损是工业上导致零件和装备失效的三个主要问题中的一个。
Wear is one of three main industrial problems, that causes the component and equipment failure.
制动轮是门座式起重机制动装置的关键零件，制动轮在生产制造和使用过程中的早期失效及热处理缺陷是影响生产成本及效率的重要因素。
The brake wheel is a key part of portal frame crane, and its earlier failure and heat treatment defect during manufacture and use is the key factor, which affects the cost and efficiency.
在汽车碰撞试验中，试验设备及其零部件潜在的失效问题不可绝对避免。
The failure of test equipments and their parts or components cannot be absolutely avoided in the automobile collision test.
结果表明：组织疏松的存在是造成零件失效的主要原因。
The results showed that the existence of porosity was main reason of parts failure.
在多冲这种动载应力波作用下的零部件大都在多冲的接触表面出现或引发各种缺陷并导致早期损伤失效。
All kinds of defects appear in the surface of components which under the repeated impact load, and the surface defects make the earlier damage and failure.
传统可靠性设计理论认为处于工作过程中的机械零件，要么是安全的，要么是失效的。
According to the traditional probability theory, a part in the course of working may be either in safe or in invalidation.
在计算机科学中只有两件难事：缓存失效和命名。
There are only two hard things in Computer Science: cache invalidation and naming things.
机械零件在随机载荷作用下产生疲劳失效。
The machine parts occurred fatigue failures under the actions of random loads.
设备的零部件和金属构件发生的损坏，80%是由于各种微观和宏观机械应力集中所导致的疲劳失效。
The fatigue invalidation made by the kind of microcosmic and macroscopical mechanical stress concentrate 80% resulted in equipment part and metal components damage.
在试模过程中，成型的塑件有多种失效形式，而每种失效形式都和模具设计不合理有关。
There are many failure modes of plastic parts during trial molding process. Every failure mode is in relation to improper designs.
应用模糊数学的理论，对机械系统和多失效形式的零件进行了模糊可靠度设计，并给出了设计实例。
Applying the theory of fuzzy reliability, this paper introduces the fuzzy reliability design of the mechanical system and components with high invalidation. It also introduces some examples.
本文从橡胶密封件密封失效的原因着手，系统地论述了密封件设计、选型、装配等要素。
The design, selection, assembly of seals are systematically discussed starting form the cause of the sealing failure of rubber seals.
对适用期已过或者调整对象已经消失的2件部门规章，宣布失效（目录见附件二）。
To announce the invalidation of 2 departmental regulations of which the application term has expired or the objective regulated has vanished (see Attachment 2 for the list).
表面工程是针对零件表面失效的形式、特征和机理，综合运用各种表面技术进行防护的工程。
Based on the knowledge of formation, characteristic, and mechanism of component's failure, surface engineering is extensively used to protect component surface by different of surface technology.
在多冲载荷作用下，零部件大都会在其接触表面出现宏观可见的变形，并引发各种缺陷，从而导致零件损伤失效。
Under the effect of this kind of load, there are microscopic deformations and various disfigurements appear on the contact surface of the parts, and then lead to damage and failure.
液压顶升系统(以下简称系统)液压元件磨损和密封件失效使系统产生超量内泄漏便是系统出现故障的主要原因。
The main reason for the defects is that the over leakage is produced in the system because the hydraulic components are worn down and the seals are failed.
在此基础上，本文对出现失效的零件：花键轴、连接螺栓、蜗轮这三个具体的零件根据其失效方式进行了详细的分析。
Finally, on the basis of above mentioned narrations, the paper has studied in detail the failure part: splined shaft, linking bolt, worm gearing.
多数情况下，对机械零件的模糊失效概率模型用解析法求其模糊失效概率是极其困难的。
It is mostly very difficult to calculate fuzzy failure probability of mechanical parts by using analytical method according to the model of fuzzy failure probability.
提出了结构关键件功能失效概率、单机功能失效概率和机群功能失效概率的概念。
Notions of probability of structural function failure, probability of function failure for one aircraft and probability of function failure for a fleet are presented.
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