The tooth surface is described by TCA method. The model can be put into any angular position of gear. The change in mounting condition is also considered in the global coordinate.
该算法用TCA描述齿面坐标，能自动适应齿轮副任何瞬时转角位置：并在形成整体坐标时考虑了安装条件的变化；
The construction of this ball bearing is similar to mounting two single row angular ball bearings back to back(DB).
这个球轴承结构越来越相似 ，两个单列角球轴承背对背（DB）的。
The construction of this ball bearing is similar to mounting two single row angular ball bearings back to back(DB).
这个球轴承结构越来越相似 ，两个单列角球轴承背对背（DB）的。
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