The results show that, PDMAEMA/PSF hollow fiber NF membrane is positively charged and has better selective separation characterization for inorganic solutions, which shows as .
实验表明:PDMAEMA/PSF中空纤维纳滤膜荷正电,对离子的截留有选择性,对阳离子的截留顺序为:Mg~(2+)>Na~+>K~+,对阴离子的截留顺序为:Cl~->Br~->I~-。
A positively charged composite nanofiltration(NF) membrane is prepared by coating solution of chitosan and polyvinyl alcohol blends on a PAN ultrafiltration(UF) membrane,subsequently crosslinking with glutaraldehyde(GA).
以壳聚糖和聚乙烯醇共混物溶液为铸膜液,涂敷在聚丙烯腈超滤膜上,以戊二醛为交联剂,制备了荷正电壳聚糖-聚乙烯醇共混物/聚丙烯腈复合纳滤膜。
A positive electric charge.
正电正电荷，阳电荷
Electrical positives attract electrical negatives.
正电荷吸引负电荷。
An electron with a negative charge, as contrasted with a positron.
电子带有负电荷，与正电荷相反的电子
Amino acids are positively charged (cationic) at low pH and negatively charged (anionic)at high pH.
氨基酸在低ph值下带正电荷(阳离子),在高ph值下带负电荷(阴离子)。
Relating to or designating electric charge of a sign opposite to that of an electron.
正电的与电子所带电性相反的电荷的，表示正电的或阳性的
Electrons are negatively charged with electricity; protons are positively charged
电子带有负电荷，质子带有正电荷。
Electrons are negatively charged with electricity,protons are positively charged.
电子是带负电荷的,质子是带正电荷的。
Neutron has no charge, either positive or negative.
中子既不带正电荷，也不带负电荷。
Two negative charges repel each other, and so do two positive charges.
两个负电荷相斥，每个正电荷也是如此。
Two negative charges repel each other , and so do two positive charges .
两个负电荷相斥，两个正电荷也是如此。
Similarly, either an addition of positive charge or a removal of negative charge will result in an excess positive charge.
加入正电荷或移出负电荷，都将同样地导致过剩的正电荷。
The fur must have a positive charge.
毛皮必定带有正电荷。
If a body is nonelectrified, the positive charges balance with negative ones.
如果一个物体不带电，它的正电荷与负电荷相等。
An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.
阳离子带有正电荷的一个或一群离子，特点为在电解中向阴极运动
cation:an ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.
阳离子:带有正电荷的一个或一群离子,特点为在电解中向阴极运动。
We believe that there are electrical charges of two kinds, called positive and negative, in each atom .
我们确认，每一个原子具有两种电荷：正电荷与负电荷。
Ion： Atom or group of atoms with one or more positive or negative electric charges.
离子:带有一个或多个正电荷(阳离子)或负电荷(阴离子)的原子或原子团。
space-charge cloud
空间电荷云，容积电荷云