短語詞組短語propulsion -unit efficiency 推進裝置傚率turbine boiler propulsion unit 鍋爐汽輪機推進裝置atomic propulsion unit 原子能推進裝置hydraulic efficiency propulsion unit 噴水推進裝置SAFER backpack propulsion unit 背包推進裝置ducted -propulsion unit 空氣噴氣推進裝置water jet propulsion unit 噴水推進裝置electric propulsion unit 電力推進裝置swimmer propulsion unit 水下泳行器;自泳式潛水動力裝置 返回 propulsion unit