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单词
zone plate
释义
zone plate
noun
:
an optical device that consists of a series of concentric opaque rings of such width that rays from alternate half-period elements are cut off and that has some properties of a converging lens
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piedy
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pie-eyed
pie-faced
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pieing
pie in the sky
pi electron
pieman
piemarker
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更新时间:2025/11/17 16:54:29