bourdon
bourdon[ˈbʊəd(ə)n]noun- (Musica)low-pitched stop in an organ or harmonium, typically a stopped diapason 16-foot pitch
(乐)布尔东低音;管风琴或风琴的低音音栓,(尤指16音阶音高的主音栓)
语源- Middle English (in the sense 'drone of a bagpipe'): from Old French, drone', of imitative origin
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