例句與造句

1. In the foreign country , neutron induced prompt gamma - ray analysis ? ipga was used to analyze the elements in substance and has been used in real production and industry " s analysis on line now . in our country , the method has been studied and used from 70 " s and has been more and more perfect . however , the neutron source they used is the isotope source
   在國外，早已開始采用中子感生瞬發(fā)射線分析法( nipga )對物質(zhì)進行元素分析，如今這種方法已經(jīng)應用于實際生產(chǎn)和工業(yè)在線分析，國內(nèi)在八十年代也開始研究、應用這種方法，如今已日趨完善，然而，他們使用的中子源絕大多數(shù)仍然是同位素中子源，做為一種可行性實驗方法研究，我們采用脈沖中子發(fā)生器做為中子源，自行研制的線性門電路和多道脈沖幅度分析器相配合，獲取非彈性散射和俘獲譜，對物質(zhì)進行元素分析。
2. It's difficult to find prompt gamma in a sentence. 用prompt gamma造句挺難的