helioscope

n. 太阳目视(观测)镜,太阳观测望远镜

发音

US

词形变化

helioscopes 复数 helioscopes

释义与例句

n.
  1. 1.

    An apparatus for viewing the Sun without harming the eye, by means of an optical filter that attenuates most of the sunlight while allowing only a small amount of the solar radiation.

    天文

词源

From helio- + -scope.

来源：wiktionary