coal mine calamity
常见例句
- The subsidence is one form of coal mine secondary of the geological calamity.
和龙市地质灾害主要为泥石流，其次是崩滑灾害。 - Coal mine environment geological calamity are originates of coal mine environment problems.
煤矿环境地质灾害是煤矿区环境问题的主要发生源。 - The coal seam methane is a source of coal mine gas calamity, and also a clear energy resources.
甲烷是强烈的温室气体，煤层甲烷是煤矿瓦斯灾害之源，也是洁净的能源。 返回 coal mine calamity