raie ultime

名词 n.
中文释义

英文释义

名词 n.
  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.
    — In the second paper M. de Gramont considers the distribution of raies ultimes in different stellar types, having studied for this purpose the Harvard classifications, the numerous publications of Sir Norman Lockyer, and the works of Sir William Huggins.

词形变化

raies ultimes plural Raie Ultime alternative

词源

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