Compared with aluminum sulfate, PASS has advantages of less dosage, better flocculate properties, wider applied range.Preparation of PASS is a new approach of comprehensive utiliza...是什么意思_Compared with aluminum sulfate, PASS has advantages of less dosage, better flocculate properties, wider applied range.Preparation of PASS is a new approach of comprehensive utiliza...在线翻译_英语_读音_用法_例句