如果这个表面是光滑的(比如大理石)，那将完全改变这幅照片。
If this surface was smooth (such as marble), it would completely change the image.
因为非驱动关节不能直接控制，系统属于非完全可控系统，一般的光滑反馈控制方法对这样的系统是无效的。
The unactuated joints can't be controlled directly, so it is an incomplete controllable system. Smooth feedback control is invalid for such system.
然后，完全出乎意料的，妈妈在光滑的路上做了一个华尔兹旋转。
Then, totally out of character, mother twirled one spin of a waltz on the slippery sidewalk.
应用推荐