How to determine the phase retardation of crystal precisely and conveniently has continuously been paid attention to.

如何精确而又方便地测定晶体的相位延迟量一直受到人们的关注。

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For the relation between the change of placement and that of retardation is given in theory, we have the theoretical basis to adjust and use correctly phase retarder.

从理论上定量给出方位变化与延迟量变化的关系，从而为延迟器件的调整和正确使用提供理论依据。

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Put forward a new method of assembling polarization-interference to measure the phase retardation of wave-plate.

提出了会聚偏振光干涉法测量波片相位延迟量的新方法。

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