中文摘要：

为了考察岩石熔融过程中熔体成分的变化规律，以细粒闪长岩为样品，进行了不同熔融程度的实验研究。通过对熔体成分的分析，得出以下结论：在初始熔融条件下，熔体的成分为玄武质，随着熔融程度的增高，熔体的成分由基性向中酸性，由富钾向富钠，由强碱性向亚碱性方向演化。

英文摘要：

In order to reveal the characteristics of diorite melt composition under different degree of melting, we performed the experiments to analyse the melt composition while the diorite was being melted under high pressure and high temperature. We came to the following conclusions. When the melting was in the first degree, the composition of the melt is that of a basalt. As the melting degree increasing, the characteristics of the melt composition were being changed from basic to medium-acidic, from potassium-rich to sodium-rich, and from strong alkaline to alkaline and subalkaline.