标准极性
The polarity can be reversed, standard size.
极性可反转或变换, 标准尺寸.
Nonpolar, standard, used in polarity reverse and change circuits.
无极性产品, 标准品, 用于极性翻转或极性变换的电路中.
The wastewater will be desalinated at least 81. 9% to meet the water reuse standard for polymer preparation by way of pole-reversing electrodialysis at field, in this time the polarity of the electrodes of the electrodialysis facility have to be alternated frequently.
用频繁倒电极电渗析对油田含聚合物废水进行脱盐处理,脱盐率达到81.9%,达到配制聚合物的用水标准。
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