常見例句Thus, the boron-bearing rock system and the magnesian rocks are the foundation of the borate deposits, whereas regional metamorphism and migmatitization and tectonism are the necessary conditions. 含硼巖系、鎂質容礦巖石是硼礦形成的物質基礎，區(qū)域變質及混合巖化作用、構造活動是硼礦形成的必要條件。those in Archean and lower-middle Proterozoic hypometamorphic crystalline basement were formed as a result of the replacement of carbonate rocks by metamorphic hydrothermal fluids generated during regional metamorphism and migmatitization; 產(chǎn)于太古代及早、中元古代深變質結晶基底中的礦床,由區(qū)域變質及混合巖化過程中的變質熱液交代碳酸鹽巖成礦。Migmatit 混合巖 返回 migmatitization