在二粒子集团近似下导出了分子取向分布函数所满足的方程，并用迭代方法求解。
The equation of the molecular orientational distribution function was obtained by two-particle cluster approximation and solved by an iterative method.
通过规格化条件讨论，分析了统计分布函数与四维粒子流矢量间的关系。
The relations between particle four current vector, normalization condition and distribution function are analysed.
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。
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.
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