提出基于光弹调制器式反射差分技术的多通道并行测量新方案，完成一台双通道并行测量样机。
A new multi-wavelength parallel measurement method is proposed and a two-wavelength spectrometer for PEM-based-RDS is developed.
提出基于光弹调制器式反射差分技术的多通道并行测量新方案，完成一台双通道并行测量样机。
A new multi-wavelength parallel measurement method is proposed and a two-wavelength spectrometer for PEM-based-RDS is developed.
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