It was surprising when the alkali spectra showed unmistakable doublets.当碱金属光谱显示出不容怀疑的双线结构时,是令人惊奇的.The envelope is called a double of doublets.这种峰叫做双合双重线....

n.紧身上衣，成对的东西( doublet的名词复数 )...

doublets的音标：doublets的英式发音音标为：['dʌblɪts]doublets的美式发音音标为：['dʌblɪts]...