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- Practice of Quick Drill in Coal Mine Emergency Rescue 快速钻孔技术在煤矿应急救援中的实践
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- Some coal mines had to shut down. 有些煤矿不得不关闭。
- Many coal mines are careless with worker safety. 很多煤矿对工人的安全问题根本不管不顾。
- There are many coal mines in the north. 北方有许多煤矿。
- There was a terrible blast in the coal mines. 矿坑中发生了可怕的爆炸声。
- Coal mines have given collectors good samples. 煤矿给(化石)收集者提供了很好的样品。
- Foul or poisonous gas that sometimes pollutes the air in coal mines. 矿井瓦斯，有毒气体矿井中有时污染空气的恶臭气体或有毒气体
- They underwrote the coal mine's bonds. 他们同意买下该煤矿的未认购的股票。
- There is a coal mine near my home town. 我的家乡附近有一个煤矿。
- The coal mines of North China are centred in Shanxi Province. 华北的煤矿集中在山西省。
- He tried to regularize the management of coal mines. 他试图将煤矿的管理系统化。
- We decided to open out a coal mine near the city. 我们决定在城市附近开发一煤矿。
- The coal mine was closed down due to exhaustion. 这煤矿因矿源枯竭而关闭了。
- They are developing a new coal mine. 他们在开发新煤矿。
- They sold the coal mine at a profit. 他们把煤矿卖掉赚了钱。
- China Geological Coal Mine Corp. 中国地方煤矿总公司。
- Coal Gas Factory of Datong Coal Mine Gro. 大同煤矿集团有限责任公司煤气厂。
- A passage or gallery in a coal mine. 通道煤矿中的通道或水平巷道
