例句與造句

1. This dissertation presents the structure , the principle and the design of frequency - variable power system with the application of dsp ( digital signal processor ) and ipm ( intelligent power module )
   變頻技術(shù)是電力電子技術(shù)的主要組成部分，應(yīng)用十分廣泛，它主要應(yīng)用在交流電機(jī)的調(diào)速和供電電源兩個領(lǐng)域。
2. It's difficult to find variable power system in a sentence. 用variable power system造句挺難的