被称为标距长度的这段长度延伸问题将在测试进行时研究。指示标距长度的端点的各个点称为标距点。

The extension of a length called the gauge length is studied during the test. The points that indicate the ends of the gauge length are called the gauge points.

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提出由中心点间距和中心连线角度构建的距离判距 ，解决了中心点位置关系的识别问题 ，进而计算出标距长度。

Then the position of the experiment points are calculated by averaging the grid points. The length of the gauge can be calculated after the relationship of the centers is recogn…

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