作为这些沉淀离子的补充，来自阳极的金属被溶解并进入溶液平衡离子势能。

As a replenishment for these deposited ions, the metal from the anode is dissolved and goes into the solution and balances the ionic potential.

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在沉淀体系中，当有掩蔽剂存在时沉淀剂的合理用量及被沉淀离子在溶液中最小残留量的计算是个复杂问题。

In the precipitate system with masking agents, the calculation of the rational amount of the precipitant and the smallest remainder of metal ions in the solution is a complicated matter.

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此外，当它的使命结束后，高铁酸盐中的铁离子也会以氧化铁的形式沉淀，过滤后就是洁净的水了。

Moreover, once it has done its job, the iron in ferrates precipitates too, as iron oxide, leaving pure water behind.

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In an aqueous solution, he passes electric current and causes silver ions to deposit and form metallic silver.

在水溶液中，他接通电流，这得银离子,沉淀，并形成金属银。

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