safety shutoff device 安全关气装置

overriding automatic shutoff device 超控自动关闭装置

emergency shutoff device 紧急关断装置

governor shutoff device 调速器熄火装置

Emergency Fuel Shutoff Device 紧急燃油切断装置

engine shutoff device 发动机停车装置

Trough with shutoff device 闸门式流槽

ehab shutoff device 燃油系统

electrical water shutoff device 电控找堵水装置