Taking the JJY model spectrometer as an example, the focusing and inclination of optical axis are discussed in this paper.

本文以jjy型分光计为例，对分光计的聚焦与光轴倾斜度这两方面的调节做了系统论述。

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This method includes an electrostatic spherical grid retarding spectrometer with a post focusing system.

球面栅静电减速谱仪具有后聚焦系统。

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