除氢、氧、氢氧根离子而不含其它离子的水，一般是用离子交换树脂生产，用于前处理工艺的最后一道水洗。

Water containing no ions other than hydrogen, oxygen and hydroxyl ions. Usually produced through the use of ion exchange resins and used for the final rinse in pre-treatment processes.

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硝酸盐和水溶性有机氮随着去离子水的迁移而迁移，并增加了土壤的肥力。

Nitrate and water-soluble organic nitrogen were migrated with deionised water migrating and increased subsoil fertility.

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其使用一种特殊的过滤膜充当分子过滤器，凭借让水份子通过而留下那些使水变咸的离子，诸如钠和氯化物离子。

This uses special membranes which act as molecular sieves by passing water molecules while holding back the ions, such as sodium and chloride, that make water salty.

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And that's all that's big enough to pass through or small enough to pass through. And if we go up even just one row on the periodic table to potassium, what we actually see is now that it's going to be too large, and, in fact, a potassium solvated with one water molecule won't go through our channel.

就是这样刚好大到它通过,或者说刚好小到它通过,即使我们再沿着周期表往下走仅仅一行到钾离子，我们看到的就将是它的个头太大了，实际上，溶解于一个水分子的单个钾离子,不能穿过我们的通道。

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