1.State officials said the mine was a long-wall mining operation, which is one of three major underground coal-mining methods.
州官员称，该煤矿采用长墙作业法。这是三种主要的地下煤开采方法之一。
2.In this paper, the Periodic unsteady state heat conduction of coal wall in the front of underground coal gasification stove is researched.
研究了煤炭地下气化炉前方煤壁的周期性非稳态导热。
3.Scientists have tried to set fire to underground coal to speed up the fires.
科学家曾试图放煤炭在地下加快火燃烧。
4.The last underground coal mine in Hungary, at the Vertesi power plant, is slated for closure at the end of this year.
匈牙利最后的地下煤矿，位于威尔泰西发电厂，将在今年年底前关闭。
5.The field testing was done in an underground coal mine, the relation between plate force and distance to heading face was analyzed.
在井下进行了托板受力实测，分析了托板受力与距掘进工作面距离的关系。
6.With underground coal resources mined, the balance between ecological environment of the mining area, buildings and structures was damaged.
地下煤炭资源的开采，使得矿区的生态环境、建筑物和构筑物之间的平衡遭到破坏。
7.Enterprises are encouraged to purchase accidental injury insurance for the miners working in underground coal mines and pay the premium.
鼓励企业为井下作业职工办理意外伤害保险，支付保险费。
8.The exterior underground-coal-fire (UCF) is largely similar to the ignition of the underground coal gasification (UCG).
煤矿外因火灾发生与煤炭地下气化点火过程具有很大的相似性，两者皆会发生再生火源现象。
9.In the short term, ENN's advanced underground coal gasification technology is likely to prove more significant than its algae work.
在短期内，ENN集团先进的煤炭地下气化技术很可能被证实比其藻类技术更为重要。
10.The paper first proposes two fusion methods of local integration and global integration to fusion multi-sensor data underground coal mine.
本文首次提出了运用局部融合和全局融合两级融合的方法对煤矿井下多传感器数据进行融合。