demicircle

测角器

发音

UK /dɛmɪˈsɜːkəɫ/

词形变化

demicircles 复数 demicircles

释义与例句

n.
  1. 1.

    A semicircle.

  2. 2.

    An instrument for measuring angles in surveying etc., resembling a protractor with an alidade, sights, and compass.

词源

From demi- + circle. Compare French demi-cercle.

来源：wiktionary