- 重点词汇
- 相关例句
A coal miner for most of his years , father knew only the hardest kind of life.
父亲当了大半辈子煤矿工人, 饱尝着生活的艰苦.
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Twice he brought in his walking stick, and once he brought in the coal scuttle.
有两次他把他的拐杖带进去, 而有一次他带进去一个媒斗.
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The migrating methane by cross-borehole in coal seam is used in this condition.
交又钻孔抽放本煤层瓦斯正是在这种条件下产生的.
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严重突出煤层掘进水力掏槽防突措施在国际上是一种防突新技术.
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Exploration evaluation coal seam gas is a base of coal seam gas exploration and developing.
煤层气的勘探评价,是开展煤层气勘探与开发工作的基础.
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高瓦斯低透性煤层的瓦斯抽放,一直是煤矿安全生产过程中的重大技术难题.
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The surrounding rock of roadways in soft coal seam has low strength and bad stability.
软煤巷道围岩强度低,稳定性差.
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This paper is a guide to precise determination of the content of coal seam methane.
对正确测定煤层瓦斯含量有一定的指导意义.
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This paper goes further into blast-winning technology of the composite coal seam face.
深入探讨了复合煤层回采工作面“松动放炮”落煤的工艺问题.
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There are of forms of gas discharge , but the form is soft coal seam gas discharge.
目前在瓦斯抽放中急待解决的问题是软煤层瓦斯抽放的打钻技术,尤其是深孔打钻技术.
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在全球范围内, 许多煤田都存在煤层自燃问题.
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Coal Mine and the coal seam 13-1 has especially complex hydrogeology condition.
新集二矿在特定推覆体水体下的煤层开采, 13-1 煤开采水文地质条件尤为复杂.
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