短語詞組短語submerged economic speed 水下經(jīng)濟(jì)航速submerged cruising speed 水下巡航速度submerged full speed 水下全航速range at submerged economical speed 水下經(jīng)濟(jì)航速續(xù)航力maximum submerged speed 水下最大航速range at maximum submerged speed 水下最大航速續(xù)航力high speed submerged arc welding 高速埋弧銲 返回 submerged speed