pythagorean scale

• 自然律,自然音阶

pythagorean scale的用法和样例：

例句

1. Diatonic seventh chords use the notes of the diatonic scale to add a seventh above the root to triads.
   自然七和弦使用自然音阶的音，在三和弦上增加根音之上的七音。
2. After careful analysis, the author finds that as for the series produced by all the 7 known Wu-yang bone-flutes, all are natural scales containing different numbers of scale steps.
   摘要经分析研究，笔者认为已知的七支舞阳骨笛，其所能奏出的音列全为包含不同音数的自然音阶。