From this spectrum, one or more low-frequencysignal components that are characteristic of the sample being interrogated are identified.
从该谱上识别一个或多个表征该被询问样本的低频信号分量。
2
It is necessary to choose the right hardware, write the right soft ware and found the economical and applied low-frequencysignal gathering system.
所以选用恰当的硬件，编写合适的软件，组建既经济又实用的压电加速度低频信号采集系统是十分必要的。
3
Stochastic resonance can only be applied to low-frequencysignal or the known high-frequency signal detection. So the applications of the system are severely constrained.