| 释义 |
external forceＳ短语⁶⁶¹⁴⁵
基本例句
外力
力
It was indicated that the linear defect appeared after machining is not crack, it is the appearance of oxide film involved in the casting under the effect of external force.
结果表明，这种加工后出现的线性缺陷并非裂纹，而是卷入铸件的氧化膜受外力作用后在叶片表面的显现。 chemyq
Then the center of mass, but only the center of mass, would have a velocity that never changes, because if there's no external force then there is only a constant velocity.
那么整体的中心，也仅仅是整体的中心，会有一个不变的速度，因为它不受外力,它有一个持续的速度。163 |