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本文从二维二元替换式Collins模型系统的两相平衡曲线方程出发,求得了形成极小等浓度点或极大等浓度点类型相图原子间相互作用势所必须满足的条件,证明了极值等浓度点的唯一性。计算结果还表明,4-原子所占百分数对极值等浓度点的位置有显著影响。Starting with the equations of phase equilibrium curve for the Collins model of two-dimensional alternative binary system, we obtained the conditions which must be satisfied by the attractive interactions between the atoms to get the phase diagram with a minimum (or maximum) point. The obtained results show that, this point is unique, and the position of the point (zf, tf) changes with the percent age of 4-atom obviously.
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