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单词 phototube
释义

phototube

noun

pho·​to·​tube ˈfō-tō-ˌtüb How to pronounce phototube (audio)
-ˌtyüb
: an electron tube having a photoemissive cathode whose released electrons are drawn to the anode by reason of its positive potential

Word History

First Known Use

1930, in the meaning defined above

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更新时间:2024/12/23 1:54:53