截留来自清洗药剂中可能存在的颗粒或污染物，防止其进入膜系统。
To hold back the particles or pollutants may exists in the cleaning medicament avoid them from entering into the membrane system.
瓷砖和地板都必须清洁干净，干燥，无尘。清洁掉任何油脂，油漆或污染物。准备好粘合好的水泥。
Both the tiles and the floor must be clean, dry and dust free. Clean off any grease, paint or pollutants. Prepare the bonding cement.
一定周期后，超滤膜上的小孔会被漆液组份或污染物堵塞，使“水”的分离效率降低，这时，必须对隔膜进行清洗。
Periodically, some of these pores are blinded with components of the paint or contaminants, reducing the efficiency of water extraction. When this condition occurs, the membrane must be cleaned.
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