It is very important to analysis mechanics character of Marine gear transmission system which is an important part of Marine power equipment.
船用齿轮传动系统是船舶动力装置的重要组成部分，分析其系统力学特征相当重要。
The contrast analysis shows that, the timber physic mechanics character is similar with the other species of Populus. The main orientation of timber utilization is pointed out.
对比分析可知其木材物理力学性质与杨属类其它种木材相近，并指出其木材利用的主要方向。
On the base of experimental research, using analysis of finite element, the mechanics character and reaction to pile caps of the middle pile of steel fiber reinforce concrete five-piles cap.
本文在试验研究的基础上，借助有限元分析，重点研究承台中间桩受力特点以及它对承台的作用。
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