例句與造句

1. random process theory is a kind of effective mathematical tool to handle random vibration problem . through frequency spectra and time domain analysis for random course, the seemed complex vibration time-history can be transferred to trigonometric function series, thus makes it have certain periodic feature
   隨機過程是處理隨機振動問題的一種有效的數(shù)學工具,通過對隨機過程進行時域分析和頻譜分析,可以將看似非常復雜和毫無規(guī)律的隨機振動表示為三角函數(shù)的級數(shù)形式,從而使其具備了一定的周期性特征。
2. It's difficult to find random course in a sentence. 用random course造句挺難的