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1·Concepts of metamorphism, metamorphic reaction, prograde and retro - metamorphisms.

变质岩的一般概念、变质反应、进变质和退变质。

2·The evolutionary feature of the water activity shows that the metamorphic fluids may have played a buffering role in the metamorphic reaction temperature during the metamorphic stages.

水活度的演化特征表明，变质流体在变质作用过程中，对变质反应温度起着一定的缓冲作用。

3·The study is about the characteristics of structure, assemblage of metamorphic rocks and relationship among distribution, assemblage and reaction of minerals.

根据区内构造特点、变质岩共生组合、时空分布、矿物共生组合及其反应关系的研究，揭示了本区变质作用特征。