It consists of a magnetic scanning system, a thick slit, a fluorescent screen and a CCD image processing system.
它包括有磁扫描系统，厚窄缝，荧光屏以及CCD图像处理系统。
The slit scanning is required to obtain two-dimensional spectral imaging.
为了得到像斑的二维光谱，需要做狭缝扫描。
The slit scanning is required to obtain two-dimensional spectral imaging.
为了得到像斑的二维光谱，需要做狭缝扫描。
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