[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

指甲刀刀口硬度应选HRC50以上的硬化不锈钢,普通420不锈钢用久易崩口,日本SK-4碳钢或德国440不锈钢可长期保持锋利

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85%
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Long-term
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