10 Safety Monitor/Alarm System: Safety Monitor/Alarm system that monitors the face velocity and provides audible and visual alarm if face velocity drops below safe levels shall be provided.
10 Safety Monitor/Alarm System: Safety Monitor/Alarm system that monitors the face velocity and provides audible and visual alarm if face velocity drops below safe levels shall be provided.
安全监控/警报系统：安全监控/警报系统监控表面风速，并在风速降低的时候，提供声、光报警。