The rotary and carriage assembly is adapted to apply rotational, thrust and pull-back forces to the drill pipe.
旋转和机架组件用于向钻杆施加旋转、推进和回拉力。
2
The characteristics of the radical-thrust hybrid floating-ring bearing considering inertia term were studied as the rotor-bearing is working with high rotary speed.
研究了径推动静压浮环轴承在高速运转时，计入迁移惯性项的轴承特性。
3
The invention provides a horizontal shaft type rotary machine capable of simply feeding oil into thrust bearing devices.