半封闭式电机
semi-enclosed type machine
封闭式电动机
enclosed type motor
enclosed type electric motor
半封闭式电炉
Semi closed electric furnace
封闭、半封闭空间
hermetic and half-hermetic spaces
封闭式电机
enclosed electric machine
密封式电动机
hermeticmotor
hermiticmotor
hermetically-sealed motor
hermitic motor
sealed-in motor
hermetic motor
canned motor