Following these two examples of two and three phases , regarding ternary and quarternary metallic melts involving eutectic as melts consisting of three and four non - homogeneuos solutions correspondingly , and using thermo - dynamic parameters of binary metallic melts involving eutectic , calculating models of mass action concentrations for ternary symmetrical melts formed from similar metastable compounds , ternary unsymmetrical melts formed from unsimilar metastable compounds and quarternary metallic melts involving eutectic have been formulated 仿照這兩個(gè)二、三相熔體的例子,將含共晶體三、四元金屬熔體看作由3 , 4個(gè)溶液組成的非均相熔體,并利用含共晶體二元金屬熔體的有關(guān)熱力學(xué)參數(shù),針對(duì)由同類亞穩(wěn)態(tài)化合物組成的對(duì)稱型三元系、不同類型亞穩(wěn)態(tài)化合物組成的非對(duì)稱型三元系及四元系含共晶體金屬熔體,制定了相應(yīng)的作用濃度計(jì)算模型。