例句與造句

1. That is the reason that all over the countries have never stopped researching for mask jamming technology of radar . at present , the mask jamming source mainly comes from the thermal noise and zener avalanche noise of semiconductor devices . but the noise ’ s quality isn ’ t stabile because of the differences of semiconductor devices each other and the changes of exterior conditions
   目前采用的遮蓋性干擾的噪聲源主要來自半導(dǎo)體器件本身的熱噪聲或齊納雪崩噪聲,但各器件本身的不一致性和外界條件變化等因素使噪聲輸出質(zhì)量不穩(wěn)定;同時由于此類信號不能再生,不利于科學(xué)研究。
2. It's difficult to find avalanche noise in a sentence. 用avalanche noise造句挺難的