幅频图 meaning in English

amplitude frequency diagram

The auto - spectrum is attached to linear phase , the amplitude - frequency drawing is got according to the arithmetic of bi - spectrum , then the equivalent is educed , the conversion relation is attained
该方法通过对自谱添加线性相位，根据双谱的数值估计算法计算获得双谱在三维空间的幅频图，通过推导双谱与自谱估计算法之间的等价关系以及所得的幅频图来实现两者之间的相互转换。
There are functions such as drawing the chart of amplitude - frequency and phase - frequency , calculating and displaying the highest peak value , the total sum of amplitude and the effective line - breadth of the signal in the program . so an effective technical means is supplied for the analysis of ultrasonic signal
软件系统具有幅频图及相频图的绘制、最高峰值、谐波系数及有效谱宽度的计算及显示等功能，从而为超声信号的频谱分析提供了极其有效的技术手段。