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optional sampling中文什么意思

發(fā)音:   用"optional sampling"造句

例句與用法

  1. The dma 5000 measures a sample in 40 seconds , considerably increasing efficiency in your lab . optional sample changers automate filling and cleaning , freeing lab personnel from these routine tasks
    Dma 5000在40秒內(nèi)測量一種樣品，在相當(dāng)程度上提高實驗室的工作效率?？蛇x配樣品轉(zhuǎn)換器，完成自動進樣和清洗，解放實驗室工作人員執(zhí)行的這些常規(guī)任務(wù)。
  2. Firstly , by numerical and theoretical analysis , the author compares some existent confidence intervals , for example , " exact " confidence interval , wald confidence interval and bayesian confidence interval , and finds some deficiencies points of the confidence intervals , whose modification version has been proposed . also , several better confidence intervals such as are also presented . secondly , for given confidence coefficient and interval width , the author constructs a class of asymptotical two - stage interval estimate procedures . at the same time , under varies restriction of confidence coefflcientent interval width , the optional sample size of the first stage has been computed by numerical computation . the numerical computation shows that the method considered in this dissertation have good properties and applied value
    同時，由于poisson分布的特性，我們知道不存在其參數(shù)區(qū)間長度小于0 . 5的置信區(qū)間，基于這些情況，我們主要展開了以下兩個方面的研究：一是利用數(shù)值計算分析與理論分析的方法對現(xiàn)有的若干置信區(qū)間如“精確”置信區(qū)間， wald置信區(qū)間， bayes置信區(qū)間等進行分析比較，發(fā)現(xiàn)了一些缺陷，針對這些缺陷，我們進行適當(dāng)?shù)男拚?，并得到幾種性質(zhì)較好的置信區(qū)間如：修正大樣本區(qū)間jeffreys原則下置信區(qū)間二是針對已給定的置信系數(shù)與區(qū)間長度，我們提出了一種漸近的兩階段區(qū)間估計程序，并利用數(shù)值計算的方法，在各種置信系數(shù)與區(qū)間長度限定下，算出了最優(yōu)的第一階段觀測次數(shù)(抽樣量) ，大量數(shù)據(jù)表明，本文考慮的方法性態(tài)良好，具有應(yīng)用價值。
  3. With those purposes , the paper discusses the social and economic basis of auditory of circulations with systemically reviewing the origin , development and internationalization of abc and bpa . an analysis on the definition , significance and characteristics of auditory of circulations is also done with a full perspective on the current index systems and series of regulatory regime both on abc and bpa ( us abc and bpa international as the two optional samples ) . furthermore , the author tries to find out a tentative solution on the issue of the system construction of auditory of periodicals " circulations with the analyses of the current social and economic situations , especially the development of the periodical industry and advertising industry in china at the beginning of 21st century
    本文對abc和bpa的起源、發(fā)展和國際化歷程做了系統(tǒng)考察，在此基礎(chǔ)上分析發(fā)行量認(rèn)證體系存在和成長的社會經(jīng)濟基礎(chǔ)；以美國發(fā)行量認(rèn)證署（美國abc ）和bpa國際媒體認(rèn)證公司（ bpainternational ）這兩個認(rèn)證機構(gòu)為樣本，對兩種認(rèn)證體系的現(xiàn)行指標(biāo)體系及具體管理制度等微觀層面作全面透視，分析發(fā)行量認(rèn)證的內(nèi)涵、意義和特征；針對中國當(dāng)前的社會經(jīng)濟現(xiàn)狀，尤其是中國期刊產(chǎn)業(yè)和廣告業(yè)的發(fā)展格局進行剖析，解答中國要不要引入期刊發(fā)行量認(rèn)證體系以及中國引入期刊發(fā)行量認(rèn)證體系的初步解決方案這兩個問題。

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