Unverified83% confidenceDecision RuleTime unknown
砂套出现明显磨平、掉砂或打磨时长明显变长（原来10秒能磨掉的现在30秒无感）时应立即更换，磨损砂套仅靠摩擦产热而不研磨，反而更易烫伤宠物
1
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83%
Confidence
Long-term
Relevance
-
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