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单词
poulsen arc
释义
poul·sen arc
\ˈpau̇lzən-, -lsən-\
noun
Usage:
usually capitalized P
Etymology:
after Valdemar
Poulsen
died 1942 Dan. electrical engineer
physics
:
a direct-current arc formerly used for producing undamped high-frequency oscillations
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更新时间:2025/7/28 18:28:53