短語(yǔ)詞組短語(yǔ)crank the gear down 人工放下起落架crank link gear 曲柄連桿傳動(dòng)裝置crank balancer gear 曲軸平衡裝置crank planetary gear drive 曲柄行星傳動(dòng)crank shaft gear 曲軸轉(zhuǎn)動(dòng)裝置to crank the gear down 擺動(dòng)放下起落架double -crank planetary gear transmission 雙曲柄行星齒輪傳動(dòng)locking crank gear 鎖定裝置oscillating crank gear 擺動(dòng)曲柄裝置 返回 crank gear