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单词 lenard rays
释义 le·nard rays
\ˈlāˌnärt-, ləˈnärd-\ noun plural
Usage: usually capitalized L
Etymology: after Philipp Lenard died 1947 German physicist
: a mixture of cathode rays that have emerged from a vacuum tube into the outside space through a window consisting of a piece of thin metal foil and rays emitted by the foil as a result of the incidence of the cathode rays
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更新时间:2024/9/21 1:38:33