line frequency modulation(LFM)的用法和样例：
例句
- The theoretical prediction and the simulation results indicate that the LFM is very useful to depress the inter-symbol interference.
理论推导和实际仿真结果都表明，利用线性调频信号进行调制，可以很好的抑制码间串扰。 - On the basis of the waveform storage method, a digital generation system scheme for ultra wide-band radar LFM pulse compression signals is presented in this paper.
该文基于波形存储直读法，提出了一种超宽带线性调频信号数字产生系统方案。
