resultant moment of force 合力矩 ; 协力矩
resultant force of force system 力系的合力
spot of resultant force 合力的作用点
point of resultant force 合力作用点
thought of resultant force 合力思想
Resultant force of supervision 监督合力
There is no change in the motion of a body unless a resultant force is acting upon it.
除非有一合力作用于物体上，否则物体的方向是不会发生变化的。
Do the tangential force, the mormal force, the resultant force and their directions during oscillation of a simple pendulum change?
那么单摆在振动过程中，切向力、法向力及合力的大小和方向是否在变化?。
Have the entire resultant force of certain sell an ability and certain team.
具备一定的销售能力和一定的团队整合力。
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