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单词
afocal system
释义
afocal system
[`ā·fō·kǝl `sis·tǝm]
OPTICS
An optical system of zero convergent power, for example, a telescope.
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Hollinidae
hollow
hollow block
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hollow-core construction
hollow drill
hollow ended
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更新时间:2024/7/2 18:13:47