寿命经过4个大循环单元后，铅基合金腐蚀断裂，而复合钛拉网板栅仍然完好，没有明显腐蚀，只是活性物质有些脱落。

After 4 cycles, the Pbbased alloy grid is broken whereas the composite ti expand grid is in good condition and has no obvious corrosion except the little shedding of active material.

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本文主要介绍了容栅式数显焊接棱角度错边量检测仪尺身定栅槽、基尺外形的成型磨削加工工艺以及砂轮修整工艺，此外，对成型磨削过程中的计算机模拟进行了分析。

This paper introduces the shape grinding process of the decides grid trough and the rule's contour and the process of grinding wheel truing, analyzes the process simulation by computer.

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