log mean 中文意思是什麼

log mean 解釋
平均基數
  • log : n 1 原木，圓木，乾材。2 測程儀，計程儀。3 航海日誌，（飛行員用的）航海日誌；旅行日記。4 〈英國〉...
  • mean : vt 1 意，有…的意思，意思是…。2 意指，用…意思說；意味著，就是。3 （用語言、繪畫等）表示意思，表示...
  1. Log mean divisia index method was adopted to analyze the effects of activity level, market share and energy intensity of various transportation systems on energy consumption of passenger and fright transportation

    本研究的目的在於?集整理運輸部門的運輸活動量與能源消費量，並就各運輸系統的延入公里數及延噸公里數進行推估。
  2. The goal of this paper is to study fully developed turbulent pipe flow. with the aid of the tripping annulus at the inlet, based on the experimental investigation and numerical simulation, detailed researches on a few basic rules in pipe flow have been performed, such as mean velocity profile, relative intensity of turbulence, the log - law, von karman ' s constant and reattachment length, thus filling some gaps in the research work of predecessors and obtaining a far - reaching understanding

    本文的目的就是利用入口擋環進一步探索充分發展的圓管湍流，通過實驗和數值模擬對圓管湍流的若干基本規律，如平均速度分佈、相對湍流強度、對數定律、馮?卡門常數和再附著長度等進行詳細的研究，以填補前人研究中的一些空白，並獲得更深入的了解。
  3. 107 + 2. 819x ( serotype l ), log [ et reciprocal ] = 1. 019 + 2. 935x ( serotype 2 ), ( 3 ) log [ et reciprocal ] = 0. 99 + 2. 709x ( serotype 4 ) and log [ et reciprocal ] = 1. 052 + 2. 953x ( serotype 5 ). the derived regression lines ( equations ) were used to transfer the optical density value ( od ) obtained from a single 1 : 100 dilution of any unknown serum sample of duck into elisa titer. the indirect elisa technique were used to monitor the variety of the mean antibodies titers of vaccinated ducks with the oil - emusified formalin - inactived r. a

    間接elisa方法的靈敏度是微量凝集試驗的50 - 100倍（血清1型鴨疫里默氏桿菌） ， 25 - 100倍（血清2型鴨疫里默氏桿菌） ， 12 - 100倍（血清4型鴨疫里默氏桿菌） ， 25 - 200倍（血清5型鴨疫里默氏桿菌） 。
  4. When dicussing reliability design and reliahbaiiy ensuring methods, a new reliability calculating model of petroleum logging tools is presented, reliability assurimg technologies should be taken in petroleum logging tools and their using approaches are presented and stated from electricity design and mechanical design, reliability system model of petroleum logging tool is set up according to the latest reliability theory, reliability indexes of petroleum logging tool and their acquiring ways are discussed, the reconmended reliability indexes ( mwture, nolwnm, mtbf, mttf ) of petroleum logging tool are presented : the mean working time under rated error ( mwture ) of the new tool is obtained through experiments. when studying data processing methods, the property of gamma - ray signal is stated and the type of it ' s measuring error is examined using statistical method, the basic theory of digital filtering and the basic situation of digital filtering methods are introduced and analyzed, the factors affecting digital filtering effect to gamma - ray signal and the effect of digital filtering to logging curve are analyzed, the evaluting criteria ( rvi, rmse, sfi ) of digital filtering effect are set up from two aspects, named as real value acquiring of steady section and the formation boundary checking and processing, the related filtering methods and examining methods are given out. the design methods of digital filter used to process gamma - ray signal are discussed, the mixed filtering scheme of natural gamma - ray log is presented, the realization ways are discussed. the selective filtering system and it ' s realization flow are given out through quantitive reseaching to part of digital filters, three new filtering sheme will be used to process gamma - ray signal in era2000 logging system

    在探討可靠性設計與可靠性保障技術時，提出了石油測井儀器的可靠性計算新模型，從電氣和機械兩個方面，提出並闡述了應採用的可靠性保障技術及其使用方法：根據最新可靠性理論，建立了石油測井儀器的可靠性系統模型，探討了石油測井儀器的可靠性指標及其獲取途徑，提出了推薦使用的石油測井儀器可靠性指標（ mwture ， nolwnm ， mtbf ， mttf ） ；通過試驗，得到了所設計儀器的穩定工作時間（ mwture ） 。在研究數據處理方法時，闡述了伽瑪信號的特徵，對測量誤差類型進行了統計檢驗；介紹了數字濾波的基本理論、數字濾波方法的概況，並進行了分析；對伽瑪信號數字濾波效果的影響因素及其對測井曲線的影響進行了基本分析；從獲取平穩段真值、地層邊界的檢測與處理兩個方面，建立了數字濾波效果的評價準則（ rvi ， rmse ， sfi ） ，給出了相應的數字濾波方法及效果評價方法；探討了自然伽瑪信號數字濾波器的設計方法，提出了適合自然伽瑪測井的混合濾波方案，探討了混合濾波方案的實現途徑；通過對部分數字濾波方法的定量研究，給出了靈活可選的數字濾波系統構成及實現流程；提出的三種濾波方案，將用於era2000成像測井系統，對自然伽瑪測井數據進行濾波處理。
  5. By the method used in 13, 32, one can estimate the mean depth d and the effective length l in each grid. the slope of the aquifer can also be calculated through an analysis of the digital elevation model. the two parameters a and b in the quasi - steady subsurface model can be calculated by the following method : the nonlinearity parameter b is taken to be 2. 0, the parameter a can be calculated by plotting the values for dq dt versus q in a log - log graph 13

    同時將一種非常典型的「擬穩定」狀態的地下圖圖3 a三種入滲的時間序列; b三種入滲對應的地下徑流深的變化以及d dsitqst ?注意這徑流機制13 ， 31里的只是s的函數也耦合到clm里，並應用到該流域進行模擬實驗
  6. The log indicated a mean speed of between eight and nine miles. the tankadere still carried all sail, and was accomplishing her greatest capacity of speed. if the wind held as it was, the chances would be in her favour

    再說唐卡德爾號上的大帆也非常得力，船的吃水量也很深，一切都有充足的b @海岸的海面比較適合小船航行。
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