... Back-up tongs内钳 Lead tongs外钳 Pneumatic tongs气动大钳Hydraulic tongs液压大钳Driller room司钻房 ...
基于62个网页-相关网页
special postal articles: referring to postal date-marks, postal tongs for lead sealing and postal bags.
邮政专用品：指邮政日戳、邮政夹钳和邮袋。
Lead and backup tong-men should not stand between the two pipe tongs while the driller is making up or breaking out pipe or collars.
当司钻正在上卸钻杆和钻铤时，内外钳工不要站在两个大钳之间。
Special postal articles refer to postal date-marks, postal tongs FOR lead sealing and postal bags.
指邮政日戳、邮政夹钳和邮袋。
应用推荐