Paper has systematic summarized the characters of the Tertiary coal bearing strata of N.E.China Region,genetic types of coal,lithotype of coal,metamorphism and its rules.是什么意思_Paper has systematic summarized the characters of the Tertiary coal bearing strata of N.E.China Region,genetic types of coal,lithotype of coal,metamorphism and its rules.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句