An external method of treatment, chemical exfoliation for acne, is usually added to medications.

化学剥脱法，是一种常见的外用药物治疗痤疮的办法。

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A simple and effective strategy is proposed to tune the number of graphene layers by selecting suitable starting graphite, using a chemical exfoliation method.

本文介绍了一种通过选取起始石墨烯利用化学剥落法来调整石墨烯层数的简单而有效的方法。

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