实验还表明研磨加工后，工件表面都产生塑性变形，即使是像陶瓷、硬质合金等硬脆性材料，其表面也存在一定的塑性变形。
And experiment indicate that, machined parts will occur plastic deformation after lapping, even surface of brittle materials such as ceramics and carbide will deform to a certain degree.
滚研机是小直径工件外圆表面研磨加工设备之一，该机导轮表面形状直接影响加工精度。
The roll lapping machine is one of the equipments processing the excircle surface of minor diameter workpiece by lapping. The working accuracy is affected directly by the guide wheel of this machine.
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