It can measure not only the sine wave, square wave, triangle wave, a sharp pulse but also can measure other characteristics of the signal wave.

它不仅可以测量正弦波、方波、三角波、尖脉冲信号和其他具有周期特性的信号的频率，而且还可以测量它们的周期。

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The toroidal core was excited by sharp pulse current. The sensor circuit is composed of peak value detector, Butterworth low-pass filter and differential amplifier.

磁芯采用高频脉冲电流励磁，信号处理电路由峰值检波、低通滤波及差动电路构成。

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But the possibility of the sudden changes contained in polynomial considerably produces "sharp pulse" when expressing some curves with polynomial, which has greatly reduced precision.

但多项式本身包含突变的可能，使得在用多项式拟合一些曲线时，会表现出大幅“尖脉冲”，对拟合精度影响很大。

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