drift face 中文意思是什麼
drift face
解釋
工作面前壁-
Silently we unlatch the door, letting the drift fall in, and step abroad to face the cutting air
譯文: 「我們悄悄地拔去了門閂,雪花飄飄,立刻落到屋子裡來,走出屋外,寒風迎面而來,利如刀刺。 」 -
Length determine and installation of borehole orifice - pipe for grouting in the excavation face of shaft and drift
井巷工作面注漿孔口管的長度確定與埋設
分享友人