sampling bias 中文意思是什麼
sampling bias
解釋
抽樣偏差-
To avoid sampling bias, they restricted their analysis to one group of animals ? the bivalve molluscs ? that fossilise well
為了防止取樣的偏頗，他們將分析的對象限制在一類化石記錄保存完備動物? ?雙殼類軟體動物。 -
Experimental methods for checking the bias of sampling
校核取樣偏差的實驗方法 -
Iron ores - experimental methods for checking the bias of sampling
鐵礦石校核取樣偏差的實驗方法 -
Hard coal and coke - mechanical sampling - methods of testing for bias
硬煤和焦炭.機械取樣.偏差試驗方法 -
Standard practice for bias testing a mechanical coal sampling system
煤機械取樣系統偏差試驗的標準實施規程 -
Hard coal and coke - mechanical sampling - part 8 : methods of testing for bias
無煙煤和焦炭.機械取樣.第8部分:偏差試驗法 -
Evaluation of sampling methods for iron ores - experimental methods for checking the bias of sampling
鐵礦石取樣方法評定.第3部分:檢查取樣偏差的實驗方法 -
This made a small - scale sampling to develop a database of school teacher ' s information literacy through, used regression analysis to determine the weight distribution of evaluation indicators by means of minimum sampling bias, and set up a set of quantitative indicators for the evaluation of teacher ' s information literacy
摘要本文認為通過小范圍的教師樣本可獲取關于教師信息素養量化評價指標和總的教師信息素養數據，運用回歸分析法最小化樣本偏差可獲取各評價指標對應的合理的權重分佈，從而建立一個適應各學校實際情況的教師信息素養量化評價指標體系。 -
Because of the structure of the traditional polarization diversity and combining scheme is too complex, after researching the polarization diversity and diversity combining technology, a new structure of receiver is proposed. in this structure the uniform sampling second - order dpll is used to remove the frequency bias after frequency discrimination
該結構控制較為復雜，為此結合實際項目要求，在研究了極化分集接收關鍵技術的基礎上，提出了一種改進的極化分集接收機結構，即在鑒頻之後利用均勻采樣二階數字鎖相環誤差傳遞函數的高通特性去除各種頻偏分量。 -
And then the stability and the stable error response of the dpll are analyzed. there is an obvious doppler shift frequency offset in the received signal with flight at a high speed, in the dissertation the uniform sampling second - order dpll is used to remove the frequency bias for its excellent high - pass characteristic of the error transfer function
由於高速飛行的遙測目標在接收信號中會出現較大的多普勒頻率分量，而典型均勻采樣二階數字鎖相環dpll （ digitalphase - lockedloop ）的誤差函數具有高通特性，所以本文提出一種利用其高通特性來去除多普勒頻率分量的新方法。 -
Firstly, design the software phase - closed loops ; secondly, realize the double closed loops control of the instantaneous value and the virtual value. furthermore, the dynamic flux imbalance of the output transformer caused by ordinary pi arithmetic is analyzed in detail. a new solution for flux balance by sampling the instantaneous primary current of the output transformer and introducing the on - line calculated bias current component into the voltage regulation arithmetic is presented
系統軟體實現了ups的各個功能模塊，首先設計了軟體鎖相環；然後實現了輸出電壓瞬時值和有效值雙閉環反饋控制；並且在深入分析基本數字pi演算法所引起的輸出變壓器動態偏磁問題的基礎上，提出了一種改進演算法，實時消除了變壓器的偏磁。 -
Process - dissociation procedure ; pure measurement ; sampling bias ; memory ; consciousness
過程分離程序純凈測量取樣偏差記憶意識 -
Mechanical sampling of coal - part 3 : determination of pracision and bias test
煤炭機械化采樣第3部分:精密度測定和偏倚試驗
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