Chinese translation for "back-up safety device"

备用安全设备

Similar Words：

"back-up overspeed governor" Chinese translation, "back-up plate" Chinese translation, "back-up position" Chinese translation, "back-up roller" Chinese translation, "back-up rolls" Chinese translation, "back-up sand" Chinese translation, "back-up shot" Chinese translation, "back-up spring" Chinese translation, "back-up strategy" Chinese translation, "back-up tape" Chinese translation