GB/T 20957.2-2007

Test conditions for machining centres - Part 2: Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z-axis)

精密加工中心检验条件 第2部分：立式或带垂直主回转轴的万能主轴头机床 几何精度检验(垂直Z轴)