strength envelope

FEM and theory of space engagement incorporated, contact strength, main stress envelope on root of tooth, load distribution among teeth and effect that assembly error to transmission strength has been studied in this paper.

本文利用有限元分析方法，结合空间啮合原理，对侧隙可调式蜗杆传动的接触强度，蜗轮主应力分布，齿间载荷分配以及装配误差等进行了研究。

The stratospheric aerostat permanently stayed in the complex space environment with thin air and strong effect of ultraviolet radiation and ozone. Excellent properties like lightweight, high strength, tear resistance, high sealing and anti-aging are the key technical requirements of envelope material.

平流层浮空器长期驻留于空气稀薄、紫外线辐射和臭氧作用强的复杂空间环境中，轻质、高强度、抗撕裂、高阻隔和抗老化是其蒙皮材料的关键技术性能要求。