The kinetic energy theorem of mass variable system is derived from the kinetic equation of mass variable body.
从变质量物体的动力学方程出发，推导出变质量系统的动能定理。
The kinetic energy theorem of mass variable system is derived from the kinetic equation of mass variable body. The practical value of it is pointed out using an example.
从变质量物体的动力学方程出发，推导出变质量系统的动能定理。指明其实用价值，并举例加以说明。
A theorem on kinetic energy for variable mass-point and formula of work of recoil internal forces are given and the reason of soft-rope query is discussed.
给出变质量质点的动能定理和一对反推内力作功的表达式，并由此给出软绳问题的正确解释。
During the terminal guidance phase of the kinetic kill vehicle in the atmosphere, the variable structure guidance law can be used to improve the robustness to unknown escaping maneuver of the target.
大气层内的动能拦截器末制导段，为了提高对目标未知逃逸机动的鲁棒性，可采用变结构制导律。
During the terminal guidance phase of the kinetic kill vehicle in the atmosphere, the variable structure guidance law can be used to improve the robustness to unknown escaping maneuver of the target.
大气层内的动能拦截器末制导段，为了提高对目标未知逃逸机动的鲁棒性，可采用变结构制导律。
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