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单词
parfocal eyepieces
释义
parfocal eyepieces
parfocal eyepieces
[
pär′fō·kəl ′ī‚pēs·əz
]
(optics)
Eyepieces whose lower focal points lie in the same plane, so that they can be interchanged without changing the focus of the instrument with which they are used.
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更新时间:2025/3/28 7:16:08