mine shaft lining 中文意思是什麼
mine shaft lining
解釋
進壁-
Back grouting and water sealing technology for mine auxiliary shaft lining in shoushan no. 1 mine
首山一礦副井井筒壁后注漿堵水技術 -
Research and application on mechanics features of mine shaft lining shrinkable connector for freezing mine shaft
凍結井可縮性井壁接頭力學特性研究及其應用
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