frequency analysis的用法和樣例：
例句
- The random forces on the mole plough were studied by the spectral analysis method.
采用頻譜分析方法研究了鼠道犁土壤工作部件的隨機受力。 - The order tracking technique is combined with cepstrum analysis and then the order cepstrum analysis technique is presented.
將常規的倒譜分析技術(shù)與階次分析相結合，提出了階次倒譜的齒輪箱故障診斷方法。
