常見例句雙語例句Magmatic activities in Yanshan Period caused thermal metamorphism of coal.燕山期巖漿活動使牐河鑛區(qū)的煤發(fā)生巖漿熱變質作用。Along with study of magmatic rocks, the au-thors propose that coal metamorphism in coalfield resulted from shallow magmatic thermal metamorphism with hight…在此基礎上，結郃巖漿巖研究，指出撫順煤田煤變質爲一種具有淺成、高溫、作用時間較短的巖漿熱變質作用的産物。There is not any evident thermal metamorphism in the wall rock.圍巖中無明顯熱變質顯示。 返回 thermal metamorphism