diminished seventh chord
- 减七和弦：减七和弦是由根音、小三度、减五度和减七度组成的四音和弦（七和弦）：（1，♭3，♭5，7）。例如，以B为根音构建的减七和弦，通常写作Bo7，音高为B-D-F-A♭。
柯林斯英汉双解大词典
diminished seventh chord
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1.
N a chord often used in an enharmonic modulation and very common in modern music, esp jazz and pop music, consisting of a diminished triad with an added diminished seventh above the root 减七和弦 (Often shortened to diminished seventh)
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