doublets
n. 緊身上衣,成對的東西( doublet的名詞複數 )
A doublet was a short, tight jacket that was worn by men in the fifteenth, sixteenth, and early seventeenth centuries.
It was surprising when the alkali spectra showed unmistakable doublets.
當鹼金屬光譜顯示出不容懷疑的雙線結構時,是令人驚奇的.
The envelope is called a double of doublets.
這種峰叫做雙合雙重線.