rotatory polarization
... rotatory power 旋光才干 rotatory polarization 转动偏振 rotatory dispersion 扭转色散 ...
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其次，设计传动齿轮组连接偏振片和步进电机，通过对步进电机的细分控制提高偏振片的转动精度。
Secondly, an instrument for fixing polaroids and a gear team for driving between polaroids and step motor are designed.
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