face velocity meaning in English
表面速度
沿面流速
罩口风速
Examples
- 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。