Based on a lot of related documents, in this article, the hard and soft system of a new style of E-Class rail foot flatnessmeasuringinstrument was designed and made.
在阅读相关文献的基础上，设计并制作了一种新型的钢轨焊接接头平直度测量仪的相关软件和硬件。
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Measurement of the flatness of rail hand been finished by the rail foot flatnessmeasuringinstrument, it shows that the device designed can achieve the measure of Smoothness of welded joints.