Thus a smaller membrane gives off a higher first harmonic .
较小的膜发出较高的第一陪音。
The component having the lowest frequency in a complex vibration (fundamental frequency or first harmonic).
复杂振动中频率最低的成分(基频或一次谐波)。
The first harmonic winding and harmonic winding no-load property curve are gained when field current is change.
通过改变励磁电流的大小，得到了基波绕组和三次谐波绕组的空载特性曲线。
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