需要准备的材料分别是：手机、毒app。
1、首先打开毒app，点击打开我的中的“装备鉴别”选项。
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2、然后在弹出来的窗口中长按想要删除的鉴定记录。
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3、然后在弹出来的窗口中点击选择“是”选项。
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4、然后显示出“鉴别删除成功”就可以了。
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