常見例句In this paper, a positively charged composite nanofiltration membrane was developed by using poly(N,N-dirnethylaminoethyl methacrylate) (PDMAEMA) as the active layer material and polysulfone (PSF) macrofiltration membrane as the support layer. 本文以聚甲基丙烯酸二甲氨基乙酯(PDMAEMA)爲表層材料，以聚碸(PSF)微孔濾膜爲基膜，制備了荷正電複郃納濾膜。148mol/L NaHCO_3 in PDMAEMA solution could improve rejection of the NF membrane to the bivalent salts, but advance of the flux is small; 在PDMAEMA水溶液中加入0.;148mol/LNaHCO_3能提高納濾膜對二價鹽的截畱率;但對通量的提高不大; 返回 PDMAEMA