In dynamic measuring process, the same standard rod gets different measuring outcome in different place within measuring range.
动态测量时，同一个标准件在测量范围内的不同位置测量结果不同。
The correct calibration of reflectance of grazing mirror is realized, and the problem of the angle standard, rotary accuracy, big dynamic range are resolved.
利用该光源，我们实现了掠入射平面镜反射率的精密标定，解决了角度基准，转动精度，大动态范围测量的问题。
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