【摘要】 本文提出具有特殊限制条件的物系,其相律表达式为:f=K-φ-R^＊+2（R^＊为特殊限制条件数）;并提出二组分恒沸物系气液两相组成相同的关系式:X₂^液=X₂^气,应作为一种特殊限制条件而不应作为一种浓度限制条件;运用上述公式和特殊限制条件,同样得出二组分恒沸物系只有一个自由度的结论。更多还原

【Abstract】 A phase rule of system with special limiting condition expressing by formula f=K-φ-R^＊+2（R^＊ is the number of special limi- ting condition ） is proposed. The relationship [X₂^l=X₂^g]between the same concentration of both liquid and vapor phase in two-component azeotropic system should be considered as a special limiting condition rather than concentration-dependent limiting condition. By application of the formula indicated and special limiting condition, the conclusion of only one degree of freedom with two-component azeotropic system can be obtained.更多还原