The light source and the lighting control method currently used can not conservation the energy.

目前隧道内采用的照明光源、照明控制方式已不能适应节能降耗的需要。

youdao

The light source and the lighting control method currently used can not conservation the energy.

目前隧道内采用的照明光源、照明控制方式已不能适应节能降耗的需要。

youdao