... © 关键词:采矿工程;深井;煤层巷道;围岩控制;内结构;外结构 [gap=1113]Key words: mining engineering; deep shaft; coal roadway; surrounding rock control; inner structure; outer ..
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deep shaft system 深井系统 ; 高轴系统
deep shaft sinking [矿业] 深井掘进
deep-shaft airlift fermentor 深井气升式发酵罐
m deep shaft 千米深井
deep shaft mine 深井矿山
deep-shaft mine 深井矿山
extra deep shaft 特深井
At the base of a deep shaft six metres below the modern streets a wooden structure was revealed.
在现代街道下方六米深的竖井底部,有一座木质结构的建筑露出来了。
As the firemen dug away at the aperture they had opened, they found that the corridor had become a 15-foot deep shaft.
消防员们继续扩大他们挖开的孔,最后他们找到了走廊,并在那里打开了一个大约十五英尺深的竖井。
The prevention of freezing pipe breaks in deep shaft freezing has become a key technique in mine construction in China.
防止冻结管断裂在国内深井冻结中已成为关键技术。
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