prismatic focusing magnifier的意思|示意

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棱镜聚焦放大镜

focusing g magnet 聚焦磁铁
periodic permanent magnet focusing 周期性永磁聚焦
permanent-magnet focusing TWT 永磁聚焦行波管（permanent-magnet focusing traveling-wave tube）
permanent-magnet focusing 永磁聚焦
focusing quadrupole magnet 聚焦四极磁铁
cam focusing mechanism 凸轮聚焦机构
focusing-servo mechanism focusing-servo机制
automatic focusing microscope 自动调焦显微镜
automatic c focusing microscope 自动聚焦显微镜
confocal microscope through focusing 共聚焦显微镜通过聚焦