frequency character viewer 频率特性观测仪
phase frequency character 相频特性
dynamic frequency character 动态频率特性
frequency character test 频率特性试验
noise frequency character 噪声频率特性
high-frequency character 一种高频特性
frequency character curve 频率特性曲线
The buried pipe transfer equation, the frequency character and the attenuation equation of the leak signal are studied.
研究了埋地管道泄漏信号波的传播方程，泄漏信号频率特性以及衰减方程。
It is of good frequency character and capacity of preventing conjugation interference. It is suitable for all kinds of impedance systems.
改进后的电位计具有良好的频率特性及防共扼干扰的能力，能适应各种阻抗系统的需要。
This paper presents systematic theoretical calculations and the experimental investigations of the doubling frequency character of the crystal KN grown in China.
本文首次对我国生长的铌酸钾晶体的光学倍频特性进行了系统的理论计算和实验研究。
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