raie ultime

短语

发音

/ˌɹeɪ ulˈtim/

词形变化

raies ultimes 复数 raies ultimes

别名

Raie Ultime

释义与例句

n.
  1. 1.

    The line in an atomic spectrum that results from a transition to the lowest level of excitation from the first higher non-metastable level.

词源

First attested in the plural in February 1910 and in the singular in 1920; French: raie (“line”) + ultime (“final”).

来源：wiktionary