heliograph
英 ['hiːlɪə(ʊ)grɑːf]
美 ['hilɪoɡræf]
- n. 太阳摄影机；日光反射信号器；照相制版
- vi. 用日光反射信号器发送信息
- vt. 用太阳摄影机拍摄；用日光反射信号器发送
- heliograph (n.)
- product of a certain type of engraving process, 1853, from helio- + -graph "something written." Earlier, "a description of the sun" (1706, implied in heliographic). Heliography (1845 in the engraving sense) also (1840) was an early term for what came to be called photography.
- 1. The heliograph must thus be carefully aligned in the first instance.
- 回照器在开始时就要小心地对准.
来自辞典例句
