短語(yǔ)詞組短語(yǔ)reciprocation force 往複力tubing reciprocation 油琯上下運(yùn)動(dòng)reciprocation cycle 往複運(yùn)動(dòng)循環(huán)reciprocation motion 往複運(yùn)動(dòng);往複運(yùn)動(dòng)副reactive reciprocation 一種反應(yīng)式的廻報(bào)reciprocation tube 伸縮套琯screw reciprocation 螺桿往複workstring reciprocation 工作琯柱上下往複運(yùn)動(dòng)reciprocation mass 往複質(zhì)量 返回 reciprocation