shotcrete shell 中文意思是什麼
shotcrete shell
解釋
噴射混凝土殼體-
Shell hell shotcrete structure in soft rock tunnels
軟巖巷道網殼噴層新技術 -
Analysis of shell bolting and shotcrete supporting and their application in the yanzhou mine
網殼錨噴支護理論分析及其在兗州礦區的應用
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