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關注:1
2013-05-23 12:21
求翻譯:The harder the rock, so much the more difficult is the work of drilling, though few types are sufficiently hard to be allowed to remain after blasting without a lining of masonry or concrete是什么意思?![]() ![]() The harder the rock, so much the more difficult is the work of drilling, though few types are sufficiently hard to be allowed to remain after blasting without a lining of masonry or concrete
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2013-05-23 12:21:38
巖石更難更加困難的,與其說是鉆探工作,但少數種類有足夠的硬盤被允許后仍然沒有砌石或混凝土襯砌爆破
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2013-05-23 12:23:18
越是巖石,如此多的工作的更困難的是鉆井,雖然少數幾類是作出足夠的努力,可獲準繼續在沒有一個爆破后襯砌石或具體
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2013-05-23 12:24:58
越堅硬巖石,非常越困難的是鉆井工作,雖然少量類型是充足地堅硬允許在炸開以后保持沒有石工或混凝土襯里
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2013-05-23 12:26:38
越硬的巖石,這么多更難是工作的鉆探,雖然幾種類型是可獲準后無襯砌石或混凝土爆破仍然不夠硬
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2013-05-23 12:28:18
越硬的巖石,這么多更難是工作的鉆探,雖然幾種類型是可獲準后無襯砌石或混凝土爆破仍然不夠硬
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