Unverified80% confidenceTradeoffTime unknown
白刚玉/锆刚玉等特种磨料韧性和自锐性优于普通棕刚玉,适合不锈钢、钛合金等高硬度金属重载打磨,但成本更高,普通木工/家用无需选用
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80%
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