Mechanical autofrettage process is an efficient approach to enhance the elastic carrying capacity and prolong the fatigue life of gun barrels and high pressure vessels.

机械自紧是提高火炮身管和高压容器承载能力，延长疲劳寿命的有效方法。

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That the fatigue life and carrying capacity of pressure vessel can be improved by autofrettage is researched.

以及对压力容器施加自增强处理技术来提高压力容器的承载能力及疲劳寿命进行了理论研究。

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The gear transmission is most widely used in mechanical transmission with large carrying capacity, high efficiency, precise gear ratio, compact structure, reliable operation and long life.

齿轮传动是机械传动中应用最广泛的一种传动，具有承载能力大，效率高，传动比准确，结构紧凑，工作可靠，使用寿命长等优点。

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