The buried pipe transfer equation, the frequencycharacter 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。
2
It is of good frequencycharacter 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。
3
This paper presents systematic theoretical calculations and the experimental investigations of the doubling frequencycharacter of the crystal KN grown in China.