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heliograph

/'hi:liәgræf/

📖 中文释义

  1. n. 日光反射信号器, 太阳摄影机, 日光仪
  2. v. 用太阳摄影机拍摄, 用日光仪传递

🧩 词形变化

复数 heliographs现在分词 heliographing过去式 heliographed第三人称单数 heliographs过去分词 heliographed
📘 English Definition(英文释义)
  1. n. an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
  2. v. signal by means of a mirror and the using the sun's rays