例句與造句

1. B : yes , not too bad , thanks . i ' m a bit fed up4 revising though . are you
   還不錯(cuò)，謝謝。不過我對(duì)復(fù)習(xí)有點(diǎn)厭倦了。你呢？
2. I ' m just a bit fed up
   我只是感到有些膩煩。
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
   這種推進(jìn)器以鉆井液為動(dòng)力源，借助鉆頭噴嘴壓降產(chǎn)生的軸向載荷，使軸向力直接作用于鉆頭產(chǎn)生鉆壓，彌補(bǔ)有效鉆壓不足，保證鉆頭平穩(wěn)鉆進(jìn)，提高機(jī)械鉆速。
4. It's difficult to find bit feed in a sentence. 用bit feed造句挺難的