例句與造句

1. 4 . combined with front analysis , both extracavity and intracavity frequency tripling have been designed
   4 .結(jié)合前面的分析與總結(jié),設(shè)計(jì)了腔外和腔內(nèi)兩種倍頻方式。
2. It's difficult to find frequency tripler in a sentence. 用frequency tripler造句挺難的