本文对数控车削纯镍时刀具的沟槽磨损问题，应用扫描电镜、电子探针、俄歇能谱仪等进行了探讨。

Using electronic sweep mirror, electronic prober and energy spectrum meter to investigate the groove shape wear of a cutting tool, while numerical controlled turning the pure nickle.

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选型时要根据扫描仪的光学分辨率、色位数、品牌、价格等因素综合考虑。

It should be considered comprehensively with respect to the factors of optical resolution of scanner, color bits, brand and price.

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因此，进行应变测量时，应用常规的杠杆引伸仪，受到安装方式和测量标距等条件的限制，往往只能测量轴向一定范围内的平均应变。

So, in the process of strain-measuring, when we apply the normal lever extension meter, it is confined by conditions, such as the install pattern, measurement standard and so on.

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