... diffraction grating spectrograph 衍射光栅摄谱仪 plane-grating spectrograph 平面光栅摄谱仪 dual-grating spectrograph 双光栅摄谱仪 ...
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plane grating spectrograph 平面光栅摄谱机 ; 平面光栅摄谱仪
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The general theories behind echelle and its applications in astronomy are briefed, and the differences between echelle spectrograph and plane grating spectrograph are analyzed and compared.
简述阶梯光栅的基本原理和在天文学中的应用，分析并比较了阶梯光栅光谱仪与普通平面闪耀光栅光谱仪的区别。
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