使用常规超滤和改良超滤技术。
Conventional and modified ultrafiltrations were applied in all cases.
应用碳酸氢钠及利尿剂，采用常规超滤滤出多余液体及钾。
The excrescent water and potassium was treated with sodium bicarbonate, diuretic and conventional ultrafiltration.
文中也列举了荷电膜的初步应用，实验表明，在某些分离中，荷电反渗透膜和超滤膜的性能优于常规的膜。
A number of preliminary applications of the charged membrane were enumerated, and the results showed that the performance of charged RO and UF membranes...
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