Unverified80% confidenceDecision RuleTime unknown
磨头材质中金刚砂（矿物晶体）比普通滚轮更耐磨且切削均匀，但金刚砂磨头会逐渐磨损，需确认可单独购买替换磨头，否则磨头钝化后整机报废
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80%
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Long-term
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