Gōngyè shàng, lǚ zhǔyào shì tōngguò diànjiě yǎnghuàlǚ dédào de.
In industry, aluminum is produced mainly by electrolyzing alumina.
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usage
电解 is the root of 电解液 "electrolyte solution", the liquid inside a battery, and of 电解质 "electrolyte", also the word on sports drinks that replace lost salts. Plating metal by electrolysis is 电镀.