英语语法分析

The gold content decreases with increasing granitization and migmatization or amount of fe1sic minerals.

并且随着花岗岩化和混合岩化程度增加而降低。

Migmatite and mechanism of migmatization have been controversial issues in the study of geology and petrology for the past so years.

有关混合岩及混合岩化作用形成机理的不同认识，至今在地质学和岩石学中仍是一个争论问题。