The X-ray image principle and the mark ruler and standard sphere are introduced in this paper. The error from the mark ruler is also analyzed in the paper.
本文介绍了该系统的X射线成像原理、光路分析以及标尺和参考球的使用，并对标尺的固有误差作了分析。
2
The paper discusses the principle of internal sphere diameter measurement on line, composition of the measuring device and the method of the measurement error correcting.
论述了大型内球面直径在线测量的原理、测量系统的组成及误差修正方法。
3
The component proportion of complex halide sphere keeps stable basically with the relative error< 5%.