Hardness than corundum, abrasive easily broken, sharp edges and corners, good cutting, grinding heat and small.

  • 硬度高于棕刚玉, 磨粒易破碎, 棱角锋利, 切削性能好, 磨削热量小等.

  • 网络文摘精选 2025-01-18 11:38:46

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