coal mine calamity
常見例句
- The subsidence is one form of coal mine secondary of the geological calamity.
和龍市地質災害主要為泥石流，其次是崩滑災害。 - Coal mine environment geological calamity are originates of coal mine environment problems.
煤礦環(huán)境地質災害是煤礦區(qū)環(huán)境問題的主要發(fā)生源。 - The coal seam methane is a source of coal mine gas calamity, and also a clear energy resources.
甲烷是強烈的溫室氣體，煤層甲烷是煤礦瓦斯災害之源，也是潔凈的能源。 返回 coal mine calamity