heliometer

名词 n.
中文释义

英文释义

名词 n.
  1. An astronomical instrument, based on a telescope, for measuring the diameter of the sun; now used to measure the angular distance between stars and other celestial bodies.

词形变化

heliometers plural

词源

From helio- + -meter, from Ancient Greek Ἥλιος (Hḗlios), from ἥλιος (hḗlios, “sun”), and French mètre, from Ancient Greek μέτρον (métron, “measure”).
0 次浏览 数据来源: Wiktionary