[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

硬度与安全性存在权衡:越硬越耐啃、机械摩擦越强,但过硬(硬到指甲掐不动、敲击地面有响声)易导致牙齿隐裂或折断,理想硬度是能被指甲留下轻微印痕

1
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85%
Confidence
Long-term
Relevance
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