减三和弦是根音上加一个小三度的三音和弦，其上加一个小三度。
A diminished triad is a three-note chord with a minor third added over the root and a minor third added above that.
大三和弦是包含加大三度的根音在内的三音和弦，其上加一个小三度。
The major triad pattern is a pattern of three notes consisting of a root or fundamental with a major third added above it, and a minor third added above that.
大三和弦是包含加小三度的根音在内的三音和弦，其上加一个大三度。
The minor triad pattern is a pattern of three notes consisting of a root or fundamental with a minor third added above it, and a major third added above that.
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