短語(yǔ)詞組短語(yǔ)propulsion -unit efficiency 推進(jìn)裝置效率turbine boiler propulsion unit 鍋爐汽輪機(jī)推進(jìn)裝置atomic propulsion unit 原子能推進(jìn)裝置hydraulic efficiency propulsion unit 噴水推進(jìn)裝置SAFER backpack propulsion unit 背包推進(jìn)裝置ducted -propulsion unit 空氣噴氣推進(jìn)裝置water jet propulsion unit 噴水推進(jìn)裝置electric propulsion unit 電力推進(jìn)裝置swimmer propulsion unit 水下泳行器;自泳式潛水動(dòng)力裝置 返回 propulsion unit