光栅分光计 [光] grating spectrometer

光栅分光镜 [光] grating spectroscope

中阶梯光栅分光镜 echelle spectroscope

双光束光栅分光光度计 double-beam grating spectrophotometer

光栅分光仪 spectroscope

凹面光栅分光计 concave-grating spectrometer