论文部分内容阅读
在运动学中表徵质点空间位置的位移矢量(?),运动状态的速度矢量(?)和状态变化的加速度矢量(?),都是相对量。
In kinematics, the displacement vector (?) characterizing the position of the particle space, the velocity vector (?) of the motion state, and the acceleration vector (?) of the state change are all relative quantities.