120 Emergency Alarm System
general emergency alarm system
emergency bell alarm contact
emergency fault alarm mechanism
be in an emergency; report an emergency; ask for emergency help
120 Prehospital Emergency System
Abdominal surgical emergency
Ability of emergency management
Ability of emergency response
acceptable emergency dose
可接受的应急剂量
可容许剂量
事故容许剂量
可接受紧急事故剂量