coal-rock
常見例句
- Coal rock can be classified as humic and sapropelic coal.
在煤巖的分類中，有腐殖煤和腐泥煤之分。 - Research shows that maceral and the degree of metamorphism of coal rock are key factors that control the generating and storing capacity of coal rock.
煤巖組分和煤變質(zhì)程度是影響煤層生儲氣能力的主控因素。 返回 coal-rock