介绍了量程可变的线性坐标系统的坐标变换公式及其技巧。
Gives the coordinate scale formulas of linear coordinate system of changeable range.
应用矢量坐标变换的方法理论推导了在大量程范围内测量位移与光程差的非线性关系，给出了解析解与数值解。
The nonlinear relation between light travel distance and measured displacement is (deduced) by vector coordinate transforms, and their analytic and numerical results are given.
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