1.
unit-type drill head
组合钻床钻头, 标准钻头
2.
To bore(a shaft) with a trepan.
钻用钻井机钻（矿井）
3.
offshore drilling
海底钻探;海上钻井;海上钻探;海洋钻井;海洋钻探;近海钻探;滨外钻探
4.
high-thrust drill
强力钻机，高推力钻机
5.
kelly for well-drilling machiens
旋转钻孔,钻井机用
6.
tap(ping) drill
螺丝孔钻，螺丝底孔钻
7.
combination center drill
组合中心钻，复合中心钻
8.
churn-type percussion drill
无游梁绳式顿钻钻机
9.
easing the bit in
钻头轻压慢转钻进地层
10.
mixed oil drilling rig
复合式石油钻井钻机
11.
deepwater drilling
深水钻进、深海钻进
12.
auger with valve
(钻浅井用) 带阀螺旋钻具
13.
The sorker was drilling.
此工人在用钻孔机钻孔。
14.
A tool used for drilling.
钻头用于钻孔的工具
15.
This drill can bore through rock.
这台钻机能钻透岩石.
16.
a bit used in drilling for oil.
油田钻井使用的钻头。
17.
An oil platform.
钻井平台石油钻井平台
18.
Diamond drilling replaced percussion drilling.
金钻探取代了冲击钻探。