Dimension measuring is an important means to assure the machining accuracy and improve the production efficiency during the course of machining of the large-scale workpiece.
大型工件在加工过程中的尺寸测量是保证加工精度和提高生产效率的重要手段。
The aiming and positioning of measured points in diameter measurement of a large-scale workpiece is a key technology. It is a difficult measurement problem, which has not been solved.
大型工件内外径测量点的瞄准和定位是大直径测量中的一个关键技术，也是国内外未能很好解决的测量问题。
Large scale workpiece in several big range measuring parts of the rapid inspection.
大型工件大范围内多处测量部位的快速检验。
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