twelve-tone scale
noun [ C ] music specialized uk/ˌtwelv.təʊn ˈskeɪl/ us/ˌtwelv.toʊn ˈskeɪl/
十二声音阶
a musical scale including all twelve half steps (= smallest differences in sound) in an octave (= series of eight notes)
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。