短語詞組短語polycarboxylate water -reducer 聚羧酸減水劑concrete water -reducer 混凝土減水劑polycarboxyliy water -reducer 聚羧酸型減水劑water -reducer 減水劑Polycarboxylic type water - reducer 聚羧酸系減水劑retarder and water -reducer 緩凝保塑減水劑polycarboxylic acid type water -reducer 聚羧酸系減水劑 返回 water reducer