[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

刷毛磨圆率是核心安全指标,选择磨圆率≥80%的牙刷可显著减少牙龈划伤,优质产品通常达90%以上;国标要求磨圆率≥60%即合格,但60%对牙龈保护不足

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90%
Confidence
Long-term
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