polycarboxylictypewater-reducer

[pɒliː'kɑːbɒksaɪlɪktaɪpwərɪdj'uːsə]     [pɒliː'kɑːbɒksaɪlɪktaɪpwərɪdj'uːsə]    
  • 聚羧酸系减水剂

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