航空发动机主轴轴承是飞机关键部件的关键零件，其可靠性和寿命直接关系着发动机乃至飞机的可靠性和寿命。
The main shaft bearings of aircraft engine are key parts of plane, its reliability and life affect directly on the reliability and life of engine and even whole plane.
凸轮轴是发动机的关键零部件之一，其轮廓精度直接影响到发动机的性能和寿命。
Camshaft is one of the key components of the engine, and its contour accuracy has a direct impact on performance and life of the engine.
确定发动机零部件的最大应力应变循环是进行零部件寿命研究的重要内容之一。
To determine the principal maximal stress-strain cycle of engine components is an important step in research on engine components' life.
活塞作为发动机核心部件，它的设计是否合理直接关系到内燃机可靠性、寿命、经济性等。
Piston is a center part of Diesel so the reasonable design of piston directly relates to the reliability, lifetime and economic performance.
航空发动机主轴轴承是飞机关键部件的关键零件，其可靠性和寿命直接关系着发动机乃至飞机的可靠性和寿命。
One of the main reasons of the failure on main shaft bearing of aviation engine is the damage of cage.
摘要：设计合理的发动机动力总成悬置系统，对改善乘员乘坐的舒适性以及延长发动机及其它部件的使用寿命都起着非常重要的作用。
Absrtact: a reasonable design for engine mounting system is very important for travelling comfort, and very useful to prolong the use time of engine and other component too.
摘要：设计合理的发动机动力总成悬置系统，对改善乘员乘坐的舒适性以及延长发动机及其它部件的使用寿命都起着非常重要的作用。
Absrtact: a reasonable design for engine mounting system is very important for travelling comfort, and very useful to prolong the use time of engine and other component too.
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