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1. This paper studies the degradation of urea in swimming pool water after adding HTH shock of treatment disinfector. 本文研究了清水清冲击性处理剂对游泳池水质中尿素的降解作用。2) water treatment cleaning agent 水处理清洗剂 3) Qingre Liqi granules 清热理气冲剂 1. Mechanism of action of ...