聚羧酸系高性能减水剂是减水剂的新品种，具有很多良好的使用性能。

Polycarboxylic acid is a new kind of high performance water-reducing agents which have many useful properties.

youdao

聚羧酸系高性能减水剂是减水剂的新品种，具有很多良好的使用性能。

Polycarboxylic acid is a new kind of high performance water-reducing agents which have many useful properties.

youdao