Warning: file_put_contents(/www/wwwroot/ppbbbu/oiqp.com/cache/eb119b737798f916151dfc8a472c5811.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/oiqp.com/index.php on line 55 back reaming例句_back reaming英汉例句_back reaming双解例句_奇葩剧汉英词典
Drill pipe is attached to the far side of the reamer so that it can be pulled back from the near side, once the pre-reaming operation is complete. 扩孔器远侧与钻杆相连，当预扩孔作业完成后，可以将扩孔器从近侧拖回到远侧。 www.infopetro.com.cn