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说明了中学化学教材中将“酚酞试液”改为“酚酞溶液”的原因,并提出配制“酚酞溶液”的方法。
This article explains the reason of changing “phenolphthalein test solution” to “phenolphthalein solution” in chemistry teaching materials of middle school and puts forward the method of formulating “phenolphthalein solution”.