This is the maximum you can ever lose, and this is what we call the internal kinetic energy of the system.
这是可失去的最大能量，这就是我们所说的，系统内部动能。
Find the internal energy of the meson as represented by the vibration energy of the spring, and the kinetic energy of the meson as a whole after the collision.
碰撞后的夸克再经过介子内的相互作用把能量和动量传给整个介子。
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。
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