Grain size is the key factor in attaining and maintaining form tolerance and finish requirements, as well as effecting aggressiveness of the wheel.
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。
The original measure method was changed in order to keep measure convenient and control strictly the raceway size, shape and location within the tolerance range.
对原检测方法进行了改进，使测量方便，保证了滚道尺寸、形状和位置严格控制在公差范围内。
In the third chapter, mathematical model of size tolerance, form tolerance, orientation tolerance and location tolerance of cylindrical feature was established.
第三章：建立圆柱要素尺寸公差、形状公差、定向公差和定位公差的数学模型。
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