But the well surface of these materials ground was achieved difficultly with common grinding.
但采用传统磨削工艺加工这些材料很难得到良好的表面质量。
Its tissue characteristics were observed with microscope, which are contrasted with those of the powder ground with the common grinding methods.
对照常规粉碎细粉，用显微观察法对其组织特征进行观察。
Therefore, it can eliminate the profile error caused by the change of equivalent grinding thickness in the common grinding method and increase the cam grinding precision.
来达到廓形各点为当量磨削厚度为常值的目的，提高凸轮的磨削精度。
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