heliograph日光儀
helio-,太陽的,-graph,寫,記錄。引申詞義日光儀。
heliograph paper照相版紙;日光照相紙
monochromatic heliograph單色日光儀
radio heliograph射電日象儀;電波日象儀
heliograph signaling太陽反光鏡
triangulated heliograph survey三角高程測量
1. The heliograph must thus be carefully aligned in the first instance.
漢回照器在開始時就要小心地對準.
來自辭典例句
1. an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
Verb1. signal by means of a mirror and the using the sun's rays