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... e copper strip left by Anna's cutting bullet as the electrode, resulting in the electrode being dissolved, wasting a basin of salt water. In order to avoid chlorine dissolved in water during electrolysis, the electrolyte is generally It is saturated with salt water, and salt is not a cabbage price in this era. Therefore, when the waste brine that incorporates the copper ions and precipitates the impurities is poured out, Roland feels that he has thrown away several golden dragons in vain, and fi ...
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