晶体粒度是获得和保持形线公差和光洁度的关键因素，它也影响到磨轮的磨削能力。
Grain size is the key factor in attaining and maintaining form tolerance and finish requirements, as well as effecting aggressiveness of the wheel.
这种高刚度的砂轮具有高的磨削能力和磨削效率，缺点是被磨工件表面易产生划痕，难以获得高的表面加工质量。
Such grinding wheel has advantages as high grinding ability and high grinding efficiency, but they are easy to induce scratches on the ground surfaces and hence make bad surface machining quality.
由特殊材料制成，富有弹性抛光性能强，具有一定的磨削能力，广泛应用于不锈钢制品、铝合金、大理石、玻璃、皮革及韧性难磨材料抛光。
It made by abrasive and special glue and possesses resilience and good polishing function. And it is widely used to polish stainless stainless steel, aluminium alloy, marble, glass and others.
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