When frequency is up to the base frequency, the amplitude of voltage vector is restricted constant.
但当频率上升到基频后,定子电压受到变频器最大输出电压的限制而不能进一步提高。
Ultrasonic Output frequency the majority of the ultrasonic cleaning that is done in industrial applications today USES 40 kHz as a base frequency.
超声波输出频率目前大多数工业清洗应用中把40千赫作为基础频率,较低的工作频率。
It is necessary to improve the measuring precision of electric signal's base frequency, which directly influences the precision of its harmonic analysis.
由于电力信号基波频率的测量直接影响到谐波分析的精度,提高基波频率的测量精度非常必要。
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