例句與造句

1. There are three main approaches to predict the noise level : similitude structure method including the frequency - response method and proportion method , modal method including finite element method ( fem ) and boundary element method ( bem ) , and statistical energy analysis ( sea ) . the advantage of similitude structure method is to give the predicting data fast , but it has some error because of dealing with rough similitude parameter and mass load
   目前對(duì)噪聲預(yù)示主要有三個(gè)方法：一是相似結(jié)構(gòu)外推法，包括頻率響應(yīng)法和比例法等；二是傳統(tǒng)的模態(tài)方法，包括有限單元方法( finiteelementmethod , fem ) 、邊界單元方法( boundaryelementmethod , bem )等；三是統(tǒng)計(jì)能量分析方法( statisticalenergyanalysis , sea ) 。
2. It's difficult to find frequency-response method in a sentence. 用frequency-response method造句挺難的