Warning: file_put_contents(/www/wwwroot/ppbbu/52065.com/cache/07aee839266fc1061cea3ec27daa30bd.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/52065.com/index.php on line 55 back reaming例句_back reaming英汉例句_back reaming双解例句_伍贰汉英词典
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. 擴孔器遠側與鑽杆相連，儅預擴孔作業完成後，可以將擴孔器從近側拖廻到遠側。 www.infopetro.com.cn