The mechanical analysis and the trimming were performed for a novel near space aircraft which uses the variation in wind speed at high altitude to control its flight path.
对一种利用高空风的风速差控制飞行轨迹的新型低能耗临近空间飞行器，进行了力学分析与配平计算。
The test modal analysis is an effective means to identify the intrinsic attribute of a mechanical structure.
试验模态分析是识别机械结构系统固有特性的一种常用、有效的现代技术。
The present paper gives a historical summary of the mechanical analysis of human head under direct impact in recent years.
本文试图回顾近几十年人头颅受直接撞击作用的力学分析的研究进展情况。
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