为了提高尺寸预测的准确性，将实际磨削尺寸的一阶导数和二阶导数做为网络的输入。

The first and the second derivative of the actual amount removed from the workpiece were added into the network input to improve the prediction accuracy.

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一般而言，磨削被认为是一种通常用于获得高尺寸精度和较好表面光洁度的精加工作业。

Generally, grinding is considered to be a finishing process that is usually used for obtaining high-dimensional accuracy and better surface finish.

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根据采用砂轮的磨削工艺，这些尺寸变化很大。

These dimensions vary widely, depending upon the grinding process for which the wheel is to be used.

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