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。
It is also demonstrated that the AGC systems with exponential gain control characteristic may strictly be transformed into a linear system 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。
The linear response and the frequency characteristic of the spring system are studied theoretically and experimentally.
对弹性系统的线性响应、频率特性进行了理论和实验研究。
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