... level with 对...说实话 level workings 水平巷道 level 强调没有高低之处，且在同一水平面，可引申指才能相等或与相邻某物平行。 ...
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... Leon firedamp tester 莱昂型瓦斯检定器 level drift 水平巷道 level heading 水平巷道 ...
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So we construct for the background by the Second Shizuishan Mining, tunneling of the coal road and rock drift, carried on research to single tunneling technique of the horizontal tunnel.
本文以石嘴山二矿煤、岩巷的掘进施工为背景，对水平巷道单巷掘进技术进行了研究。
参考来源 - 石嘴山二矿水平巷道单巷快速掘进技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
钾盐矿井水平巷道使用的探头长度达到200米。
The lengths of the probes used in horizontal hole in potassium mines were up to 200m.
采用理论分析的方法，对水平巷道火灾时期的烟气逆流现象进行了深入研究。
Deep study was made on reverse smoke flow during fire in the entry by theoretical analysis method.
本文以石嘴山二矿煤、岩巷的掘进施工为背景，对水平巷道单巷掘进技术进行了研究。
So we construct for the background by the Second Shizuishan Mining, tunneling of the coal road and rock drift, carried on research to single tunneling technique of the horizontal tunnel.
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