The science popularization resource package of neutral water recycle in city was primarily designed by taking consideration of the designing principle, content and format.

前言： 从设计开发原则、内容和形式等方面思考，设计“城市中水回用”科普活动资源包。

youdao

The science popularization resource package of neutral water recycle in city was primarily designed by taking consideration of the designing principle, content and format.

前言： 从设计开发原则、内容和形式等方面思考，设计“城市中水回用”科普活动资源包。

youdao