The reason why the law of mechanical energy can not be satisfy the principle of relativity is the definition of external potential energy; and it is analyzed.

分析了机械能定理不满足力学相对性原理的原因在于外势能的定义，提出了对势能定义的看法。

youdao

Total potential energy is composed of elastic and dissipated potential energies in shear band as well as work done by external force.

系统的总势能由剪切带的弹性及耗散势能和带外弹性岩石对剪切带所作的外力功构成。

youdao

By introducing the concept of impulse potential energy, the generalized impulse-momentum equation is developed which describes the dynamics of a flexible robot with external impacts.

机器人工作时与之发生碰撞的操作对象可能是运动或静止的物体、环境、甚至是与之协调操作的机器人。

youdao