How to improve the precision of online measurement of large size workpiece is an important task for large machining.
如何提高大尺寸工件的在线测量精度，是大型机械加工的重要课题。
A precision measuring method and unit with two modes laser without guide for large size workpiece are presented in the paper.
介绍一种可对大尺寸工件进行无导轨精密检测的方法及装置。
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