发动机的振动具有6自由度，但是它的垂直转动和两个水平方向的平行移动是非常小的，忽略这些因素对我们的分析没有什么影响的。
The vibration of engine have 6-DOF, though The vertical rotation and parallel motion of engine is neglected because their extent is so small that they hardly effect our analysis.
发动机的振动具有6自由度，但是它的垂直转动和两个水平方向的平行移动是非常小的，忽略这些因素对我们的分析没有什么影响的。
The vibration of engine have 6-DOF, though The vertical rotation and parallel motion of engine is neglected because their extent is so small that they hardly effect our analysis.
应用推荐