短語(yǔ)詞組短語(yǔ)metamorphic E grade 變質(zhì)程度metamorphic ? grade 變質(zhì)程度coals of metamorphic grade 不同變質(zhì)程度的煤lower metamorphic grade 變質(zhì)程度低thermal metamorphic grade 熱變質(zhì)程度different metamorphic grade 不同變質(zhì)程度metamorphic grade of coal 煤變質(zhì)程度grade metamorphic 變質(zhì)巖low grade metamorphic belt 低級(jí)變質(zhì)帶 返回 metamorphic grade