移动物体的力与该物体的质量成正比。
The force moving a body is proportional to the mass of the body.
移动一个物体的力与该物体的质量成正比。
The force moving a body is proportional to the mass of the body.
改变物体运动的力与该物体的质量成正比。
The force to change the motion of a body is proportional to the mass of the body.
So, this is interesting for several reasons.
除以质量成正比。
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