用整个系统的角动量守恒条件代替切向动量守恒条件，且δr ≠ 0，考虑轨道偏心率的高次项，推导了星风吸积质量及轨道参量变化方程.在此基础上计算了 Ba星系统在星风吸积过程中吸积的物质量和轨道参量的变化，并讨论了影响Ba星污染因子的 因素.
Taking account of δr≠0，through the equation of conservation of orbital angular momentum,orbital parameters equations on the mass change are re-deduced.The equations of the orbital parameters are used to calculate the evolution of the orbital parameters and amount of accreted matter to the Ba stars.The effect of the parameters on the contamination factor are dis cussed.
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