参数测量主要指对波形特性，如上升时间、下降时间、过冲、周期、脉冲波形或眼图的幅度等。
Parametric measurements measure waveform properties such as rise time, fall time, overshoot, period, and amplitude on either a pulse waveform or an eye diagram.
大功率电力电子器件的应用，使得电网电流或电压波形产生畸变，进而使系统的电能质量下降。
Application of high power electronic elements in power system makes current and voltage waves distorted and degrades the quality of electric energy.
将上升沿和下降沿均不同的时域脉冲波形馈入到轴向模式螺旋天线中，得到不同的辐射场情况。
Several different time domain waves with different ascending time and degressive time are fed into axial-mode helical antennas, and different radiated fields are gained.
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