Safety in Coal Mines 煤矿安全 ; 端头支架在急倾斜特厚煤层综采放顶煤工作面的应用与改进 ; 煤矿应大力倡导向事故学习 ; 下保护层采煤工作面顶板走向钻孔参数的优化
coal mines 煤矿 ; 选煤矿
Coal Mines Board 煤矿局 ; 煤矿部
Coal Mines Ltd 煤炭矿业有限公司 ; 煤矿有限公司
Coal Mines Department 煤矿管理局 ; 煤矿部
coal mines authority ltd 煤矿管理公司
bone-coal mines 长跨桥
small coal mines 小煤矿 ; 小煤窑
discover new coal mines 发现新煤矿
Recent year with the increasing of the demand of coal in domestic coal market, Accidents in coal-mines in turn occur more frequently, which deeply disturbs people all the time.
近年,随着我国煤炭市场旺盛的需求,我国煤矿事故也屡屡发生,让国人深感不安。
参考来源 - 我国非法煤矿的博弈分析·2,447,543篇论文数据，部分数据来源于NoteExpress
That the application of new technology can increase the productivity of existing coal mines is demonstrated by the case of Tribnia's coal industry.
Tribnia 的煤炭工业证明了应用新技术可以提高现有煤矿的生产率。
The engine helped solve the problem of draining coal mines of groundwater and increased the production of coal needed to power steam engines elsewhere.
这台发动机帮助解决了煤矿地下水的排放问题，并增加了其他地方蒸汽机所需的煤炭产量。
Most of the miners were rescued from the coal mines.
大多数矿工从煤矿里被救了出来。
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