短語詞組短語helicopter tail rotor [航]直升機(jī)尾槳jet helicopter rotor [航]噴氣直升機(jī)旋翼helicopter rotor head 直升機(jī)旋翼槳轂helicopter rotor fuselage system 直升積翼機(jī)身系統(tǒng)helicopter rotor airfoil 直升機(jī)旋翼槳葉helicopter rotor counterbalance component 直升機(jī)旋翼配重構(gòu)件helicopter rotor in hover 懸停旋翼helicopter rotor noise 直升機(jī)旋翼噪聲helicopter rotor blade 直升機(jī)旋翼槳葉 返回 helicopter rotor