emergency governor gear的意思|示意

应急调速装置 ... emergency brake gear 紧急闸装置 emergency governor gear 应急调速装置 emergency steering gear power unit 应急操舵动力设备 ...

危急保安器 ... 危急安全阀 safety governor 危急保安器 emergency governor gear; emergency overspeed governor 危急程度 criticality ...