etalon

[计] 标准, 规格, 校准器, 标准样件, 波长测定仪

词形变化

etalons 复数 etalons

释义与例句

n.
  1. 1.

    An optical device containing parallel mirrors, used as a narrow band filter, often in laser design.

词源

From French étalon (“measuring gauge, standard”).

来源：wiktionary