指數函數 的英文怎麼說

中文拼音 [zhǐshǔhánshǔ]
指數函數 英文
exponeneial function
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. 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。
  2. 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。
  3. A certain constant has been adopted as a standard to use in exponential functions. it is an irrational number.

    人們採用某常數作為指數函數中的底，這個常數是無理數。
  4. The box beam ' s temperature stress of longitudinal direction and transverse direction with different conformation are analyzed, it finds that there is largish temperature tensile stress in the bottom of top deck and the haunch of box beam increase temperature tensile stress in the bottom of top deck. the paper makes a study of different thermal effects resulted from several kinds of closed rigid frame

    根據大量實測溫度場結果建議採用一個有利於理論推導的指數函數的公式來擬和箱梁體內的溫差分佈，既貼近實測數值，計算又比較簡單；通過對空腹式剛架拱橋尤溪洲大橋所在地夏季、秋季、冬季的溫度場及溫度應力的實測，以及與本文所提出計算方法的理論解進行的分析比較，證實了本文計算方法的正確，同時改進了已往混凝土箱梁溫度自應力的計算方法。
  5. 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。
  6. Based on the fem program on fracture of plane structure developed by professor fu xiaoling of ho hai university, a two demension damage and fracture finite program package which is programed in fortran 90 language is developed. the paper adopts the plane - eight - nodes isoparameters element and compute the developing law of the damage and macro - damage of plane structure under load. considering the original damage and tension and compression damage at the same time, the paper adopts the more reasonable concrete constitute relation of two demension and exponent function model

    在河海大學符曉陵副教授所編制的平面結構斷裂有限元程序（ dl08p4 ）基礎之上，本文用fortran90語言編制的二維損傷-斷裂有限元程序包，程序採用平面八結點等參數單元分析計算平面結構在外荷載作用下損傷及宏觀裂縫的發展規律，考慮了混凝土結構體內存在著初始損傷和同時存在的拉、壓損傷，並且採用更為合理的具有損傷含義的混凝土二維本構關系（即正交異性損傷模型中的本構方程）和指數函數模型建立的並可進行拉、壓損傷可比性換算的損傷演變方程，較為真實地反映了實際情況。
  7. ( 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。
  8. 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。
  9. 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。
  10. In the paper, static and dynamic triaxial tests were conducted on fiy ash at shanmenxia longgou ash dam, and the static and dynamic parameters of fly ash were obtained. thirdly the 2 dimensions static analysis of the ash dam was conducted based on biot ' s consolidation theory and duncan ' s nonlinear stress - strain model. finally the plane dynamic behaviors of the ash dam during earthquake of intensity 7 were analyzed based on the exponent function model of excess pore water pressure aroused by earthquake, which is put forward in the paper, and equivalent visco - elastic dynamic fem model and principle of effective stress

    本文結合實際工程，對三門峽火電廠龍溝灰壩的築壩粉煤灰進行了靜、動三軸試驗，確定了該壩粉煤灰的靜動力學指標；然後根據比奧（ biot ）固結有效應力原理，採用鄧肯（ duncan ）非線性應力應變模型，對該灰壩的二維靜力應力和變形狀態進行了分析；最後利用本文提出的地震超靜孔壓指數函數模型，採用等價粘彈性動力有限元方法，對該灰壩在地震作用下的動力穩定性進行了分析評述。
  11. 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。
  12. Besides, the covariance of a single exponent function deduced according to residue theorem, which provides the correctness of the formula of zhou and hu

    此外，還用留數定理推導了單指數函數的時變自相關方差表達式，證明了該公式的正確性。
  13. 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

    再將材料常數依次設為空間變量的指數函數和冪函數，建立了相應的彎曲斷裂模型，即一系列相關的偏微分方程的邊值問題。
  14. 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。
  15. 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。
  16. All this has laid a strong foundation for selecting a subject of maskless afm nanolithography, i. e., field - induced oxidation of si semiconductor. in chapter two, a high - intensity current between a probe tip and a sample is discussed first. electrical intensity between them is simulated using matlab software after an electrical model is introduced, thus theoretically analyzing the effect of tip radii, tip - sample separation, radii at the sample, and biases on the morphology of field - induced oxidation

    第二章首先討論了掃描探針與樣品之間的高密度電流，得出了電流密度與偏置電壓和探針?樣品間距密切相關，其關系不能以簡單的線性或指數函數來表述的結論；然後引進了掃描探針場致加工的電場模型，利用matlab模擬探針與樣品之間的電場強度，分析了掃描探針加工條件包括探針針尖曲率半徑、探針-樣品間距、樣品平面半徑以及偏置電壓等對場致氧化物幾何形態的影響。
  17. 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。
  18. Five axiomatived definitions for exponential function

    指數函數五種公理化定義
  19. 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
  20. When told the data are from an exponential or erlang distribution the six sigma black belt should know that the run chart is preferred over the standard x control chart

    譯文：當被告知數據來自於指數函數或服從厄蘭分佈，六西格瑪黑帶應該了解這時候趨勢圖優于標準的x控制圖。
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