由质量守恒定律，质量密度增量来自未挠动的质量密度的散度和位移矢量场。
According to the law of mass conservation the incremental mass density can be inferred from the divergency of the scalar unperturbed mass density and the vectorial displacement field.
物质动理论如实验确定那样，无论在定量方面或是在定性方面，都能解释气体定律。
The kinetic theory of matter explains quantitatively as well as qualitatively the laws of gases as determined by experiment.
导出了相对论电子注的动功率流定律，求得了相对论空间电荷波的正规模式。
The theorem of relativistic kinetic energy has been derived, and the normalized model of relativistic space charge wave is derived as well.
导出了相对论电子注的动功率流定律，求得了相对论空间电荷波的正规模式。
The theorem of relativistic kinetic energy has been derived, and the normalized model of relativistic space charge wave is derived as well.
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