bit feed中文什么意思

例句与用法

1. B : yes , not too bad , thanks . i ' m a bit fed up4 revising though . are you
   还不错，谢谢。不过我对复习有点厌倦了。你呢？
2. I ' m just a bit fed up
   我只是感到有些腻烦。
3. The hydrodynamic propulsor takes drill fluid as power source , with the aid of the axial load produced by the pressure drop of the bit nozzle , makes the axial force act on the bit to produce wob , making up for the insufficient wob , ensuring the bit feeding smoothly and improving the penetration rate
   这种推进器以钻井液为动力源，借助钻头喷嘴压降产生的轴向载荷，使轴向力直接作用于钻头产生钻压，弥补有效钻压不足，保证钻头平稳钻进，提高机械钻速。