装置特点：占地面积小、反冲洗时间短、反洗水量少等。

Device Features: small occupation, short backwash time, less water amount for back-washing, etc.

youdao

装置特点：占地面积小、反冲洗时间短、反洗水量少等。

Device Features: small occupation, short backwash time, less water amount for back-washing, etc.

youdao