硬度高，脆性大，磨粒锋利，导热性好。
High hardness, brittleness, abrasive sharp, good thermal conductivity.
硬度和脆性较黑碳化硅高、磨粒锋利、导热性好。
Harder and more brittle than black silicon carbide, very sharp for grinding and of good heat conductivity.
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。
Hardness than corundum, abrasive easily broken, sharp edges and corners, good cutting, grinding heat and small.
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