短语词组短语ultraviolet absorption spectrograph 紫外吸收光谱法extreme ultraviolet spectrograph 极远紫外摄谱仪far -ultraviolet spectrograph 远紫外光摄谱仪rocket -borne ultraviolet spectrograph 火箭携带的紫外摄谱仪 返回 ultraviolet spectrograph