短語詞組短語reciprocation force 往復(fù)力tubing reciprocation 油管上下運(yùn)動(dòng)reciprocation cycle 往復(fù)運(yùn)動(dòng)循環(huán)reciprocation motion 往復(fù)運(yùn)動(dòng);往復(fù)運(yùn)動(dòng)副reactive reciprocation 一種反應(yīng)式的回報(bào)reciprocation tube 伸縮套管screw reciprocation 螺桿往復(fù)workstring reciprocation 工作管柱上下往復(fù)運(yùn)動(dòng)reciprocation mass 往復(fù)質(zhì)量 返回 reciprocation