logarithm 中文意思是什麼

音標 ['lɔgəriθm]
logarithm 解釋
n. 名詞 【數學】對數。
common logarithms 常用對數。
general logarithms 普通對數。
natural logarithm自然對數。
the table of logarithms 對數表。

  1. An agonic algorithm of speech logarithm spectrum envelope

    一種語音信號對數幅度譜包絡的無偏演算法
  2. The natural logarithm of this ratio is called the logarithmic decrement.

    此比率自然對數稱為對數的減量。
  3. In this research, the plant esterase of wheat and - ethanoic acid naphthalene ester were taken as materials to inspect the relation between the wheat esterase and the organic phosphorus, ten linearity equations were established which expressed the esterase vigor and the organic phosphorus density logarithm with the change of the numerical value of ultraviolet resorption, and the monotony range and the extremum of the function were confirmed

    摘要本研究以小麥為植物酯酶的酶源， -乙酸萘酯為底物，考察了小麥酯酶與有機磷農藥之間作用的關系，建立了10個以吸光值變化表示的酶活性與有機磷農藥濃度對數之間的線性方程，並確定了函數的單調區間和極值。
  4. The dissertatio n constructs the index system, introduces the coefficients of development, coordination, fairness, and the coefficient of sd, which is composed by the former three and can reflects the sd overall strength of watershed, brings forward the quantative criteria of in order that the research of wrcc is based on the good watershed ecology and environment, the dissertation, according to the ecological appropriate theory, builds the logarithm normal distribution model about the relation between the growth of natural vegetation and the depth of groundwater ; based on this relation model, proposes a quantitative method of ecological water requirement ( ewr ) of natural vegetation in arid area, which utilizes the results of rs technique and the spot testing data of vegetative physiology demand

    針對流域特點建立了基於水資源的流域可持續發展評價指標體系，引入發展系數、協調系數、公平系數，以及由其構成的衡量水資源支撐社會可持續發展綜合水平與能力的可持續發展系數，提出了可持續發展的定量判別方法。為保證在良好生態的前提下進行水資源承載能力研究，論文根據生態適宜性理論，建立了乾旱區典型天然植物生長與主要環境因子的偏態單峰對數正態分佈模型。基於此關系模型，利用遙感技術成果以及植物生理需水的現場實驗數據，提出了乾旱區天然植被生態需水量計算方法。
  5. If we use exponentiation to encrypt or decrypt, the adversary can use logarithm to attack

    如果我們運用求冪運算來加密和解密，對手就可以運用對數進行攻擊。
  6. The fourth chapter introduces the theory of fractional brown movement ( fbm ). the image texture of turning workpiece is analyzed using fbm model. after abstracting the texture character, the cutting tool wear status can be determined according to fractal dimension and average slope of the fitting curve of the logarithm power spectrum

    第四章採用分數布朗運動（ fbm ）的基本理論，對切削工件表面紋理的圖像進行分析，提取紋理特徵參數，根據分形維數和圖像上對數功率譜的擬合曲線的平均斜率來判斷刀具的磨損狀態。
  7. Based on the equal strain consolidation model of sand drain, and neglecting the well resistance and the vertical drainage consolidation, a layered model for the nonlinear consolidation of sand drain, which accounts for the geostatic pressure varying along depth and the relationship between the average viod ratio and the logarithm of average effective stress, is presented

    摘要基於砂井等應變固結模型，考慮初始有效應力沿深度變化，忽略井阻和豎向排水固結的影響，應用平均孔隙比與平均有效應力的對數關系，建立砂井非線性徑向排水固結的分層計算模型，並求得常荷載作用下的徑向排水固結解析解。
  8. A law of the iterated logarithm for the heavily trimmed sums

    重截和的重對數律
  9. The bounded law of the iterated logarithm for sequen

    隨機變量列的有界重對數律
  10. A logarithm - kurtosis based complex algorithm for blind signal extraction and blind beamforming

    基於峰度自然對數最大化的信號盲分揀演算法和盲波束形成
  11. A little judicious guessing should be done about trace versus determinant, and more generally, about logarithm versus exponential.

    關于跡與行列式，以及更一般地關于對數與指數的關系，要進行一些審慎合理的猜測。
  12. Returns the base 10 logarithm of a specified number

    返回指定數字以10為底的對數。
  13. Returns the natural logarithm of a numeric expression

    返回數值表達式的自然對數。
  14. Value containing the logarithm of a specified number

    值，此值包含指定數字的對數。
  15. Mantissa of logarithm

    對數的尾數
  16. The limit theory of law of the iterated logarithm have received more and more attentions, especially about identical independent random variables. but up to now, the studies are only for partial sums and, have n ' t shown any concern on the special finite partial weight suras. however, the partial sums and partial weight sums not only have the osculating aspects, but also have essential difference between them. so the studies for these play an important role in theoretical and applied setups

    因此對重對數律的研究引起了國內外學者的興趣，對獨立同分佈的隨機變量，許多學者做了大量的研究工作，但迄今為止這方面的研究仍限於部分和數列的重對數律，很少涉及到特殊加權和的領域，而部分和與加權和之間既有密切聯系，又有本質不同，因此，這一問題的研究具有一定理論意義和應用價值。
  17. A new type signature of knowledge - - a signature of knowledge of the discrete logarithm of a blinded representation, which provides the verifier trusts the prover has the knowledge of the discrete logarithm when the knowledge is unknown, is proposed. the new signature of knowledge is necessary for the solution of the problem of member deletion in group signature ; 2

    提出了一種新類型的知識簽名? ?盲化表述的離散對數根的知識簽名，使得驗證者對含有知識（離散對數根）的表述未知的情況下，有理由相信證明者具有離散對數根的知識，給出了一種更間接的證明知識的方法。
  18. Law of the iterated logarithm of quantile density estimator for left truncated and right censored data

    左截斷右刪失數據下分位密度估計的重對數律
  19. But four enterococcus grew quickly and hadn " t delaying period, the final period of logarithm growing of all tested strains were 12 hour for i acidophilus pb1 and a878 ; 24 hour for bifidobacteria pba and inf ; 8 - 10 hour for enterococcus ml, pb2, a30, a31 and bacillus abticism2 the growth inhibition of escherichia coli, shigellosis, salmonell by the fermented liquor of eight probiotics bacteria was tested

    確定各菌株對數生長期末期分別為： pb1和a878 ： 12h ； inf和pba ： 24h ； pb2 、 m1 、 a30 、 a31 、 m2 ： 8 - 10h 。採用牛津杯法測定八種潛在益生菌對大腸桿菌、痢疾桿菌、沙門氏菌的抑制性，結果表明，嗜酸乳桿菌pb1 、 a878和雙歧桿菌pba 、 inf具有較強的抑菌能力，對三種致病菌能夠形成明顯的抑菌圈，而且對三種致病菌的抑菌能力明顯不同。
  20. We can find a polynomial model of a time series in case its associated matrix is not diagonal and not of full rank by using the transformations of the exponential and the logarithm

    對于不能對角和不滿秩的時間序列矩陣，運用指數對數的可逆變換及相關的列變換化為滿秩可對角的時間序列矩陣，從而找到代數多項式模型。
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