To be able to acquire the whole profile of the rail head two LLT sensors are required.

采用激光轮廓扫描仪的好处是无接触，精准以及快速。为了得到铁轨整体外轮廓，需要两支轮廓扫描仪同时工作。

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To be able to acquire the whole profile of the rail head two LLT sensors are required.

采用激光轮廓扫描仪的好处是无接触，精准以及快速。为了得到铁轨整体外轮廓，需要两支轮廓扫描仪同时工作。

youdao