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单词 aldis lamp
释义

Collins Concise English Dictionary © HarperCollins Publishers::
Aldis lamp /ˈɔːldɪs/ n
  1. a portable lamp used to transmit Morse code
Etymology: 20th Century: originally a trademark, after A. C. W. Aldis, its inventor
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更新时间:2024/9/20 22:44:35