常見例句雙語例句When picking up or setting down drill collar stands larger than 6 1/4" on the floor board, always snub with the air tugger."當(dāng)在鉆桿盒上提起或放置直徑大于6 1／4〞的鉆鋌立柱時，一定要用氣動絞車?yán)∫员０踩?br>blog.sina.com.cnDo not make up or break out the bit on a single joint of DC. If this is absolutely necessary, always snub drill collar with the air tugger.不要在一單根鉆鋌上卸鉆頭，如果確實需要這樣做，要用氣動絞車?yán)°@鋌。chazidian.com 返回 air tugger