heliographs
📖 中文释义
- n. 照相制版, 太阳摄影机, 日光仪( heliograph的名词复数 )
🔗 释义中的汉语词
🧩 词形变化
原形 heliograph
📘 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