研究瞬时频率的估计方法具有重要的理论意义和实用价值。

So the research about its methods to estimate will be valuable in theory and practice.

youdao

研究瞬时频率的估计方法具有重要的理论意义和实用价值。

So the research about its methods to estimate will be valuable in theory and practice.

youdao