heliograph
/'hi:liәgræf/
📖 中文释义
- n. 日光反射信号器, 太阳摄影机, 日光仪
- v. 用太阳摄影机拍摄, 用日光仪传递
🧩 词形变化
📘 English Definition(英文释义)
- n. an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
- v. signal by means of a mirror and the using the sun's rays