In nature, for example, the several celestial bodies, which form our solar system, compose a kinetic system, and thereby show that they are related to one another.

例如，在自然界，形成我们太阳系的不同的星球彼此处于运动的关系中，由于运动而显示出它们之间有联系。

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The specific distribution function of a relativistic kinetic system is given and its Lorentz scalar property is proved. A relativistic generalized Liouville equation is established.

给出了相对论荷电粒子体系的分布函数，并证明了它的洛伦兹标量性质；建立了推广的刘维尔方程并证明了它的协变性。

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Energy can change or cannot change, can increase or decrease or remain the same kinetic energy, but if there are no external forces on the system, momentum is always conserved.

能量可变可不变，可增加或减小，或保持动能不变，但若系统无外力，动量总是守恒。

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The total energy of the system, which we are going to get from postulate number four, which says the energy of the electron, which is the energy of the system, is the sum of the kinetic and the potential energy.

这个系统的总能量，也就是我们将从第四个假设中算出的能量，也就是电子运动产生的能量，也就是整个系统的能量，是动能和位能的总和。

麻省理工公开课 - 固态化学导论课程节选

The model will be fitted with a Kers system, short for Kinetic Energy Recovery System, that has been developed by the Formula 1 industry.

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Dubbed KERS, for Kinetic Energy Recovery System, the powerplant designed to recapture energy lost during braking or coasting.

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Of all the new regulations being implemented for 2009, the Kinetic Energy Recovery System (Kers) presents constructors with the biggest test.

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