Terms for subject Drilling containing back up

English	Chinese
back-up control manifold	备用控制管汇
back-up corner	钻台上新工人工作岗位
back-up corner	后备工作岗位
back-up line	内钳绳
back-up line	备用绳
back-up line	固定绳
back-up line	动力大钳吊绳
back-up man	外钳工
back-up motor	备用马达
back-up pad	支撑板
back-up plate	支撑板
back-up position	外钳工岗位
back-up post	系牢大钳尾绳绳头的固定桩
back-up safety	备用安全装置
back-up tong operator	内钳工
back-up tongs	松扣钳
back-up tongs	内钳
back-up tongs	背钳
back-up washer	支承垫圈
back-up wrench	松扣钳
slip back-up	卡瓦支撑座