Chinese translation for "煤的分等"

coal grading
grade

Similar Words：

"煤的发热量测定方法" Chinese translation, "煤的反应性" Chinese translation, "煤的非燃料利用" Chinese translation, "煤的分布" Chinese translation, "煤的分步骤燃烧" Chinese translation, "煤的分级" Chinese translation, "煤的分类" Chinese translation, "煤的分类法" Chinese translation, "煤的分类排号" Chinese translation, "煤的分选特征" Chinese translation