英语词汇“pilot drift”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	pilot drift
释义	pilot drift 基本例句导洞 In many projects, like the Simplon, for example, a small pilot tunnel is driven before the full diameter of the tunnel is excavated.在许多隧道工程中，经如辛普龙大隧道，都要在隧道全面开挖前打一个导洞。
随便看	crust and mantle structures crust and mulch structure Crust and upper mantle crusta osteoides radicis crusta petrosa crusta petrosa dentis crusta phlogistica crustas crustate crustated crustation crustation inhibitor efficiency crustations crustaxanthin crust block crust blocks crust breaker crust breakers crustbreaking crust breaking crust-breaking crust breaking and blanking cylinder crust breaking chips crust-breaking chips crust breaking hammer carrier