heliograph

英['hiːliəɡrɑːf] 美['hiːliəɡræf]
  • v. 照相制版;太阳摄影机;日光仪
  • heldentenor n.[音]英雄男高音(歌手)
  • helen n.海伦(女子名)
  • helene n.海琳(Helen的异体)(f
  • helga n.海尔格(女子名)
  • heliacal adj.太阳的;和太阳同时或几乎同时出没的
Noun:
  1. an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on

Verb:
  1. signal by means of a mirror and the using the sun's rays

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