fva meaning in English
实时监控指挥管理
Examples
- The fva - uv is an opto - mechanical device that controls the amount of light transmitted between two optical fibers . internal disc varies attenuation from 0 - 100 %
Uv是一个光学机械装置，可控制在两根光纤之间传输的光的数量，内部光片可在0 - 100 %改变衰减率。