例句與造句

1. The main works and results we have accomplished are as follows : 1 ) red - detuned locking of cooling / trapping laser to the cycling transition of cesium cooling has been accomplished by means of a double - passed acoustic - optical frequency shifting system and the technique of saturated absorption spectroscopy . the short - term residual frequency jitter is less than 350khz ; 2 ) automatic controlling system by computer programs has been established for laser cooling and trapping and cavity qed experiment . the laser and magnetic fields can be controlled by the acoustic - optical modulator and the electronic - controlled logic gate respectively
   具體如下： 1 )采用了往返兩次通過的聲光頻移系統(tǒng)結(jié)合飽和吸收光譜技術(shù)的實(shí)驗(yàn)方案，實(shí)現(xiàn)了冷卻俘獲激光頻率相對(duì)于銫原子冷卻循環(huán)躍遷的負(fù)失諧鎖定，短期頻率穩(wěn)定度約在350khz以內(nèi)，并可方便地調(diào)節(jié)其負(fù)失諧量而無須對(duì)后續(xù)光路再作調(diào)整； 2 )建立了一套基于計(jì)算機(jī)程序控制的、銫原子激光冷卻與俘獲實(shí)驗(yàn)所需的時(shí)序控制系統(tǒng)。
2. It's difficult to find frequency shift system in a sentence. 用frequency shift system造句挺難的