常見例句雙語例句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.簡(jiǎn)述階梯光柵的基本原理和在天文學(xué)中的應(yīng)用，分析并比較了階梯光柵光譜儀與普通平面閃耀光柵光譜儀的區(qū)別。 返回 plane grating spectrograph