The group delay, which characterizes the linear distortion of the system and network, is an important transmission characteristic.
群时延是系统和网络的一项重要传输特性，它表征系统和网络的线性失真。
2
It is also demonstrated that the AGC systems with exponential gain control characteristic may strictly be transformed into a linearsystem by using any logarithmic amplifier.
在比较器和受控放大器之间接上一个对数放大器，就可以使增益控制特性为指数函数的AGC系统严格线性化。
3
The linear response and the frequency characteristic of the spring system are studied theoretically and experimentally.