不过，紫外线系统必须安装适当的预过滤，一碳单位单独解决的味道和气味问题，将只在有可用的电源。

However, ultraviolet system must install proper beforehand, a carbon filter unit alone to the taste and smell of the problem, will only in usable power supply.

youdao

不过，紫外线系统必须安装适当的预过滤，一碳单位单独解决的味道和气味问题，将只在有可用的电源。

However, ultraviolet system must install proper beforehand, a carbon filter unit alone to the taste and smell of the problem, will only in usable power supply.

youdao