[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

激光刻字为表面浅刻,随佩戴摩擦(尤其戒指内圈接触皮肤)3-5年会逐渐模糊;需要永久保存的传家纪念应选机械深雕或錾刻,深度≥0.3mm

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80%
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Long-term
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