exponential function 中文意思是什麼
exponential function
解釋
指數函數- exponential : adj 指數的，冪的。 exponential curve 指數曲線。 exponential function 指數函數。 exponential sum ...
- function : n 1 功能，官能，機能，作用。2 〈常 pl 〉職務，職責。3 慶祝儀式；（盛大的）集會，宴會。4 【數學】...
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An exponential function is one in which the variable appears in an exponent.
指數函數是指數中出現變量的函數。 -
The envelopes of the strain peaks is an exponential function.
應變峰值的包絡線是一個指數函數。 -
The logarithmic function is defined as the inverse of the exponential function.
對數函數是作為指數函數的反函數來定義的。 -
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。 -
The useful life curves of gan - based blue led with al2o3 and sic substrate is fit single exponential function [ i = i1 + i2exp ( - t / ) ]. fron this function, we could get aging information of led about stable inteneity 1, decay intensity i2 and decay time. the novel method of evaluating aging properties of leds was put forward
用單指數函數擬合了發光二極體的光衰減曲線[ i = i _ 1 + i _ 2exp （ t / ） ] ，這個關系式可以給出三個信息：穩定光強、衰減光強、衰減速度，提出了更加合理的評價led老化性能的方法。 -
( 3 ) there is a relation approximate to exponential function between particle size and jumpiness of light scattering energy
（ 3 ）經初步擬合，粒徑和散射光能量跳動量之間有指數函數的關系。 -
On the basis of theory analysis, the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ). the dc value was closely related to both particle concentration and surface area of sand clay simultaneously. the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients. then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0. 981. so the model of automatical control system of water treatment plant was established using the formula
應用透光率脈動檢測技術和光散射顆粒粒度分析儀（ pda ） ，通過理論分析，將pda的輸出信號之一? ?平均透光強度（對應于dc值）作為原水的特性表徵參數， dc值可以同時反映顆粒濃度和比表面積因素的影響，試驗結果證明， dc值與單位體積水中泥沙顆粒總表面積s _ p之間具有很好的冪函數關系： dc = cs _ p ~ d ，式中c 、 d為經驗系數，進而得到了以dc值為參數的高分子絮凝劑投藥量公式： d = f （ dc ） = e （ dc ） ~ f ，式中： e 、 f為經驗系數，平均相關系數達0 . 981 ，利用所建立的公式，建立了前饋? ?后饋聯合控制的在線自動投藥模型。 -
Based on the spectral irradiance measured with the sun - atmosphere ultraviolet spectrum radiometer ( sauvs ) developed by the institute of atmosphere physics and the changchun institute of optics and fine mechanics, chinese academy of sciences, measuring the direct and scatter irradiance spectrum of ultraviolet waveband which arrives in beijing global surface, giving a method of retrieving the aerosol optical depth ( aod ) and put up with primary results that exponential function can fit the retrieval results according to its visibility, putting forth different coefficients and functions on variable visibility, also giving a primary analysis on the aod in dust - storm day and some contrast between sun - day and dust - storm day, analyzing the ratio between scatter and total irradiance, and its relationship with atmosphere mass and total atmosphere optical depth, lastly contrasting with the survey results by aeronet beijing station, the results of retrieval is in reason, this work gives some help in researching the co - effect of aerosol - radiance - climate and makes preparation for further survey on the radiance characteristics of dust
利用中國科學院大氣物理研究所與長春光學精密機械研究所合作研製的太陽?大氣紫外光譜輻射計（ sauvs ） ，測量到達北京地表的太陽直接和散射紫外光譜輻射，導出了大氣氣溶膠的光學厚度。初步結果表明：北京紫外波段大氣氣溶膠的光學厚度在絕大部分情況下隨波長的增加而單調減小，用指數函數可以較好地擬合反演結果，統計得到了三個水平能見度狀況下擬合函數的系數值和公式表達式；初步分析了揚沙、浮塵、沙塵暴天氣條件下氣溶膠光學厚度的特點，並與一般晴朗天氣條件下的氣溶膠光學厚度特點做了比較分析；分析了太陽紫外譜輻射中散射輻射與大氣質量、大氣總光學厚度的定性關系和定量表達式；最後與全球氣溶膠監測網路（ aeronet ）北京站的資料做比對，表明反演結果基本合理。 -
Based on the confirmation of driving force of lunar rover, we analyze the relationship between adhesion coefficient of road surface and wheel slip. in our research, several types of wheel force model are referenced among them, and we select the polynomial model with exponential function as the wheel force model of the lunar rover
圍繞月球車驅動力的確定，本文分析了路面附著系數與滑轉率的關系，以車輛動力學分析中常用的幾種車輪力模型為基礎，選擇了帶有指數函數的多項式模型作為分析月球車車輪附著力的模型。 -
The consolidating wave speed of ten concrete specimens within four kinds of composition was inspected in 28 days, and we got the analogical law that the value of consolidating wave speed changes with the increasing concrete strength : the consolidating wave speed decreases when the concrete strength increases, and they varies according with exponential function. so, the feasibility of the consolidating wave speed method was validated, and this method has the advantages that it can be used to testing fresh concrete strength real - timely
在實驗室監測四種配比共十組混凝土（砂漿）試件28天齡期內的固結波速，初步得出了固結波速隨混凝土強度增長而變化的規律：固結波速隨混凝土強度增長而降低，二者呈冪函數規律變化，而且各組試件的固結波速隨混凝土（砂漿）強度的增長有非常相似的變化規律，由此可知固結波速法檢測混凝土強度是可行性的，其優點是可以實時監測混凝土強度的增長。 -
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
進一步給出數學模型，指出重慶市的人口分布基本符合負指數函數分佈模式，城市還處于成長階段。 -
Results show that the levitation force is generated between the high temperature superconductor and the magnetic field under the critical temperature. the value of the levitation force is determined by the temperature and the gradient of magnetic field. that is the smaller of the gap, the larger of the levitation force when the temperature is fixed, and the value of the levitation force is an exponential function of the gap
研究表明，當高溫超導體的溫度低於其臨界溫度時，在磁場中開始受到力的作用；受到的懸浮力大小由溫度和磁場梯度共同決定；即溫度一定時，懸浮間距越小，對應的磁場梯度越大，懸浮力就越大，力的大小與懸浮間距成指數關系；而當懸浮間距一定時，溫度越低，對應的懸浮力也越大，且超導體剛進入超導態的一段溫度區間懸浮力增大最快。 -
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
基於priestley的演變譜密度理論，對于工程中常用到的衰減指數函數調制的演變過程激勵，可以通過對結構響應的合理簡化，得到響應特徵的解析形式。 -
The relationship between the air concentration and the scour depth can be expressed as an exponential function. aeration does not affect the shape of scour hole
摻氣濃度c _對沖坑深度的影響，可表達為摻氣濃度與沖坑無量綱深度的冪函數關系。 -
A normalized mapping rule of raw grey series is introduced by analysis of exponential function characteristics of the whitening differential equation, which makes the non - equigap grey prediction model ngm ( 1, 1 ) fit for universal raw grey series, improves prediction precision greatly, meanwhile makes innovation to series with negative values and enlarges grey prediction theory
通過對白化微分方程解的指數函數特性的分析，研究了原始灰序列的歸一化映射規則，使非等間距灰預測模型ngm （ 1 ， 1 ）適應一般灰序列，灰預測精度也大大提高。這亦解決了含負值灰序列預測的理論問題，拓寬了灰色預測理論。 -
Based on a series of tests and investigations, this paper draws some conclusions as following by processing and analyzing the test data. the minimum icing flashover voltage of composite insulators decreases with the increase of ice amount, and the tendency of it accords with exponential function. however, the relation of the minimum icing flashover voltage with icing water conductivity accords with power function
通過大量的試驗研究工作，對試驗數據進行擬合和分析處理，得到了如下結論： 1 ）合成絕緣子最低冰閃電壓隨覆冰重量的增加而降低，且其下降趨勢符合指數函數規律，與覆冰水電導率的關系符合冪函數規律。 -
Five axiomatived definitions for exponential function
指數函數五種公理化定義 -
Nonlinear seismic response to site with exponential function shear modules
指數函數剪切模量地基非線性地震反應分析 -
The type of the base function of wavelet analysis is not single, while the ft has only the sine ( or cosine ) function or exponential function. wavelet transformation has the character of multi - resolution analysis. wavelet transformation can analyze the signal in any precision ( resolution ) at any part of time and frequency according to the different translation factors and dilatation factors
小波變換具有多解析度分析的性質，對應于不同的伸縮因子和位移因子，小波變換能對信號的任何時間（空間）段、任何頻率段進行任何精度（解析度）的分析，在非平穩信號（包括瞬間信號）的分析中具有很大的優越性，分析時，在信號的低頻部分具有較高的頻率解析度和較低的時間解析度，在高頻部分則具有較高的時間解析度和較低的頻率解析度，被譽為「數學顯微鏡」 。 -
The astringency, error and stability of the numerical method are researched. zero matrix method, constant matrix method, and jacobian matrix method are constructed in order to improve numerical precision and efficiency. the steps for calculating matrix exponential function using pade approach method are given out
研究了所提西安理工大學博士學位論文數值計算方法的誤差、穩定性、收斂性等數學性質，在計算精度和計算效率兩方面提出了一些改進措施，構造了零矩陣法、常數矩陣法、雅可比矩陣法等計算格式，給出了利川pade逼近計算矩陣指數函數的求解步驟。
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