dynamic frequency character 动态频率特性
frequency character test 频率特性试验
Space-frequency character 空频特性
torque frequency character 矩频特性
spatial frequency character 空间频率特性
amplitude-frequency character 幅频特征
discontinuous frequency character 间断频率特性
non-ideal frequency character 非理想频响特性
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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