渗透性强、慢流效果好、性能稳定、使用更方便。

Permeability, and slow flow effects of a good, stable performance, the use of more convenient.

youdao

渗透性强、慢流效果好、性能稳定、使用更方便。

Permeability, and slow flow effects of a good, stable performance, the use of more convenient.

youdao