English translation for "煤的分等"

coal grading
grade

Similar Words：

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