harmonic string 和声弦
That's the harmonic series that's on that, and what the valves do is they shorten and lengthen that vibrating column of air very much like the cello string on the fingerboard.
这就是圆号上的泛音列,活瓣的作用是增长或减短,空气柱的高度,很像大提琴指板上的弦
To compensate for string stretching when played, intonation or string length tuning can be done by tuning the seventh fret notes to the seventh fret harmonic pitches for each string.
为了弥补弹奏时的琴弦拉伸，可以将每弦第七品音调到第七品泛音音高。
On the basis of the analysis of the twisting vibration of rotary sucher-rod string, a formula of calculating every harmonic vibration eigenfrequency is presented.
在对旋转抽油杆柱的扭转振动分析的基础上，给出了各阶扭转振动固有特性参数的计算式。
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