drilling machine, rotary, self-propelled, for oil or gas
旋转式钻机,自动推进式,油田或气田用
a rotary drill, clothes drier, switch, etc
旋转式钻机、 乾衣机、 开关等
kelly for well-drilling machiens
旋转钻孔,钻井机用
rotary wash-boring equipment
旋转式水冲钻孔设备
engine ,drill, dental, with swivel arm
牙科钻机,带旋转杆
screw-feed diamond rig
螺旋给料式金刚石钻机
hydraulic gait-model all-auger drilling machine
液压步履式螺旋钻孔机
auger backfiller
万能螺旋钻式回填机
great lengths of drill pipe which are rotated by an engine at the top,
钻杆顶部安装的发动机带动钻杆旋转，
Mechanics Model of Rotation Axis in Directive Rotary Steerable Drilling System
指向式旋转导向钻井系统旋转轴力学模型
Application of Combination Construction Method with Rotary Drilling Rig and Rotary Table Rig
旋挖钻机与转盘钻机组合施工法的应用
Study on the Drivin of Cavity-front Constant-pressure Impact-rotary Hydraulic Roofbolter;
前腔常压式冲击旋转型液压锚杆钻机动力头的研究
The Study on Position Measurement and Control System of Bias Unit in the Rotary Steerable Drilling Tool
指向式旋转导向钻具偏置机构位置测控系统的研究
Study on Trajectory Measurement Technology of the Point-the-Bit Rotary Steerable Drilling System
指向式旋转导向钻具钻孔轨迹测量研究
a drill consisting of a bit and a brace to hold and turn it.
有钻头和可以握住和旋转的手柄的钻机。
Method for industrial test of rotary blast hole drills
GB/T10598.2-1989旋转钻机工业试验方法
a rotating drill powered by an electric motor.
用电发动机驱动的旋转的钻子。
automatic rotation stopper
自动旋转伸缩式凿岩机