活化：使金属表面钝化状态消失的作用。
Activation: the metal surface passivation state disappear role.
以KOH为活化剂时，直接活化得到的样品的比表面积更大。
For KOH activating, the directly activated sample has the bigger specific surface area.
以KOH为活化剂时，直接活化得到的样品的比表面积更大。
For KOH activating, the directly activated sample has the bigger specific surface area.
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