例句與造句

1. In this paper , the author comprehensively expatiates the research on microwave phase in - lock frequency modulation . at first , the background of reentry telemetry system and the features of pcm telemetry system are presented , and then the author mainly discusses the application of phase in - lock fm techniques in the design of pcm transmitter and the analysis of characteristics of binary pcm reentry telemetry channel
   在文章的前面，作者簡(jiǎn)單介紹了目前再入遙測(cè)技術(shù)發(fā)展現(xiàn)狀和pcm系統(tǒng)的特點(diǎn)；然后給出了二元pcm再入遙測(cè)信道的系統(tǒng)分析和高碼速率數(shù)據(jù)傳輸實(shí)現(xiàn)的主要途徑；在文章的第三部分，討論了鎖相調(diào)頻技術(shù)及其在pcm遙測(cè)發(fā)射機(jī)中的實(shí)際應(yīng)用。
2. It's difficult to find pcm telemetry in a sentence. 用pcm telemetry造句挺難的