drift hole 中文意思是什麼
drift hole
解釋
楔孔-
Adopting the rhombus cut and the mid - deep - hole smooth blasting technology to realize fast heading in rock drift
採用直眼菱形掏糟中深孔爆破技術實現巖巷快速掘進 -
With a fire spade he scooped a hole in a high drift, set the body in it, said a prayer, and shoveled in the snow
他在高積的雪堆里挖了一個? } ,把屍體放進去,祈禱之後,將雪鏟入蓋好。
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