mechanical part短语⁷⁰¹⁴⁶ 基本例句 机械构件 A computation method of mechanical part size with reliability is presented in this paper according to the fatigue theory when the part is suffering from zero- mean-value random fatigue load. 本文根据现有的疲劳理论，提出了进行零均值随机变幅载荷作用下零件疲劳可靠度尺寸的计算方法。 cnki