churn-type percussion drill
无游梁绳式顿钻钻机
To bore(a shaft) with a trepan.
钻用钻井机钻（矿井）
high-thrust drill
强力钻机，高推力钻机
kelly for well-drilling machiens
旋转钻孔,钻井机用
mixed oil drilling rig
复合式石油钻井钻机
The sorker was drilling.
此工人在用钻孔机钻孔。
This drill can bore through rock.
这台钻机能钻透岩石.
A Study of the Technique of Cable Drilling in Modern Time;
浅述近代冲击(顿钻)钻井工艺技术
back-brake support
顿钻捞砂轮刹车支架
Raise-boring machines
GB/T12761-1991天井钻机
spider bow [for well drilling machines]
星形斗[钻井机用]
Study on Dynamic Characteristics and Failure Mechanism of Drill String in Air Drilling
气体钻井钻柱动力学特性及钻柱失效机理研究
SHALLOW HORIZONTAL DRILLING TECHNOLOGY BY USING VERTICAL-WELL RIG IN HENAN OILFIELD
河南油田直井钻机钻浅层水平井钻井技术
drilling machine, mining or quarrying, not self-propelled
开矿或采石用钻机,非自动钻机
drilling-in unit
洗井和钻油层用的小钻机
Oil whooshed up when the drill hit the well.
当钻孔机钻井时，石油喷了出来。
Using a drill, he bore a hole through the wood.
他用钻孔机在木头上钻了一个孔。
The machine used for drilling is called a drill press.
用于钻孔的机器叫做“钻床”。