[电子 物] 波形
波形的
波形图
波形图
正弦波形 ; 正弦波
物 波形失真 ; 电子 波形畸变 ; 波形失真度
输出波形 ; 电压输出波形
A waveform is the shape and form of a signal such as a wave moving in a physical medium or an abstract representation.In many cases the medium in which the wave is being propagated does not permit a direct visual image of the form. In these cases, the term 'waveform' refers to the shape of a graph of the varying quantity against time or distance. An instrument called an oscilloscope can be used to pictorially represent a wave as a repeating image on a screen. By extension, the term 'waveform' also describes the shape of the graph of any varying quantity against time.[citation needed]
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