For different soil depths, the amplitude of temperature daily variation can be approximated as an exponential function of the depth; which correlation coefficient is above 0.90 一日內(nèi)地溫變幅與深度可以擬合成指數(shù)函數(shù)關(guān)系,且相關(guān)系數(shù)都很高,都在0.90以上。
The optical field attenuates as exponential function and the transmitted beam expands quickly with the increase of the distance away from solid immersion lens 固體浸沒透鏡的折射率越大,底面出射的光斑越小,但隨著離開固體浸沒透鏡底面距離的增加,光斑增大得越快。
In the end, we the find population distribution is approximately according with negative exponential function modal, that means the city population is in adolescent period 進(jìn)一步給出數(shù)學(xué)模型,指出重慶市的人口分布基本符合負(fù)指數(shù)函數(shù)分布模式,城市還處于成長階段。
In this paper, the effect of feeding speed on peen-forming is studied thorugh experiments, which shows that chordwise peen-forming deformation is the exponential function of feeding speed 摘要試驗研究了送進(jìn)速度與拋丸成形之間的關(guān)系,結(jié)果顯示,橫向拋丸變形是送進(jìn)速度的指數(shù)函數(shù)。
Sterilisation : validated process used to render a product free of viable organisms . note : in a sterilization process, the nature of microbiological death of reduction is described by an exponential function 滅菌:經(jīng)驗證工藝用以使一個產(chǎn)品沒有活的生物體。注釋:在一個滅菌工藝中,微生物的滅除是以指數(shù)函數(shù)的方式減少的。
The expressions for correlation functions, power spectrum and correlation time of the intensity of a single-mode laser driven by two white noises with a exponential function correlation form were calculated by linear approximation method 應(yīng)用線性近似方法,計算了具有指數(shù)形式關(guān)聯(lián)的兩白噪聲驅(qū)動下單模激光光強(qiáng)的關(guān)聯(lián)函數(shù)、功率譜及關(guān)聯(lián)時間。
Assume that material constants exponential functions or power functions of spatial variable, the related bending fracture models are set, i . e . a series of boundary value problems of partial differential equations are established 再將材料常數(shù)依次設(shè)為空間變量的指數(shù)函數(shù)和冪函數(shù),建立了相應(yīng)的彎曲斷裂模型,即一系列相關(guān)的偏微分方程的邊值問題。
Results show that the aod of ultraviolet waveband decreases monotonously with increasing wavelength, and the retrieved results can be well fitted with an exponential function, and coefficients and expressions of fitting functions in three visiblities are determined statistically 結(jié)果表明:在紫外波段,大氣氣溶膠的光學(xué)厚度隨波長的增加而單調(diào)減小,用指數(shù)函數(shù)可以很好地擬合反演結(jié)果。
4 . the recurrence formula of the creep strain is the key of fem calculation of creep stress . in this paper the exponential function is used to figure the creep strain, and the recurrence formula of 3d creep strain at any periond of time is derivated 徐變變形遞推計算公式是溫度徐變應(yīng)力有限元計算實現(xiàn)的關(guān)鍵所在,本文用指數(shù)函數(shù)式表示徐變度,在此基礎(chǔ)上,對三維空間問題徐變變形進(jìn)行了研究,推導(dǎo)了任一時段徐變增量的遞推計算公式。
Based on priestley's evolutionary spectrum theory, an evolutionary process modulated by decline composite exponential function, is investigated as one kind of non-stationary excitation commonly encountered in engineering, the analytical solution of the response properties is gained due to proper simplification 基于priestley的演變譜密度理論,對于工程中常用到的衰減指數(shù)函數(shù)調(diào)制的演變過程激勵,可以通過對結(jié)構(gòu)響應(yīng)的合理簡化,得到響應(yīng)特征的解析形式。