數學表達式 的英文怎麼說

中文拼音 [shǔxuébiǎodáshì]
數學表達式 英文
mathematical expression
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 達 : Ⅰ動詞1 （暢通） extend 2 （達到） reach; attain; amount to 3 （通曉; 明白） understand thoroughly...
  • 式 : 名詞1 （樣式） type; style 2 （格式） pattern; form 3 （儀式; 典禮） ceremony; ritual 4 （自然科...
  • 數學 : mathematics
  • 表達 : deliver; express; show; voice; convey; communicate
  1. A programming language based on algol and designed for non ? numeric manipulation of mathematical expressions

    一種以algol語言為基礎，為數學表達式進行非數值操作而設計的程序設計語言。
  2. Abstract : with differential calculus and principles of precision analysis a mathematics formula on spring being out of shape error and relative factors error is derived, and given a simple method of dynamometric spring precision design

    文摘:應用全微分方法及精度分析原理，推導出彈簧變形誤差與各相關因素誤差之間的數學表達式，提供了一種測力彈簧精度設計的簡便方法。
  3. Plant endemism is the key problem in floristic study. analysis of endemism in a flora has significant implications in demonstrating floristic richness and diversity, the relationship between plants and their environment, and also in conserving biodiversity of the flora. in view of the situation that most of the past studies on endemism were qualitative, this study is the first tentative approach to the introduction of quantitative indices to the analysis of floristic endemism, with an purpose to push the study of endemism from qualitative to quantitative. four quantitative indices are introduced, i. e. level of endemism ( l ), coefficient of endemism ( c ), degree of endemism ( d ) and general index of endemism ( a ). mathematical formulae have been given to each of the above indices and explanations for them have been presented, and the scope of their use in floristic studies has been delimited and exemplified in this paper. the result shows that they are of good applicability. the proposed indices embody full information of plant systematics and plant geography. with the aid of qualitative analysis, the application of the proposed indices will improve the comparability and precision of endemism study in floristics

    過去有關特有現象的研究主要限於定性的分析，可比性和精確性較差.該文嘗試引入特有現象的定量化指標，以推動特有現象的分析研究從定性水平向定量水平邁進.所引入的4種定量化指標分別是：特有水平、特有系數、特有度以及特有綜合指數.對每種量化指標都給出了數學表達式，說明了其區系學意義，例證和界定了這些指標在植物區系分析中的應用，結果表明，它們有良好的適用性.這些指標充分地包含了植物系統學和植物區系學的信息.結合定性分析，這些指標的應用將增強植物區系研究的可比性，使植物區系特有現象的分析達到更精確的水平
  4. This paper theoretically analyses the armature current and magnetomotive force in ac exciter of brushless synchronous machine with rotating rectifier. under the normal or fault conditions of rotating rectifier, the mathematical expressions of the armature current, the m. m. f and induced electromotive force are approached

    本文通過對旋轉整流器在正常與故障狀態下的交流勵磁機電樞電流和電樞電勢作了初步的理論分析，推導出旋轉整流器在正常與故障狀態下電樞電流、空間諧波合成磁勢及其感應電勢的數學表達式。
  5. Are used in above deduction. therefore it is necessary for us to review the basic concepts of quantum mechanics and relativity from the deflection notion of analytical space - time so as to get a profound math expression - space - time wave function stwf to link relativity up to quantum mechanics. assuming that one plane cosine wave travels along

    因此，我們有必要從解析時空理論的時空偏轉原理出發，對量子理論和相對論的基礎概念重新認識，進而得到更廣泛更深刻並將量子理論和相對論連系在一個方程下的新的數學表達式-時空波函數。
  6. Furthermore, the supposition of galvanic couple is drawn into the procedure of corrosion fatigue crack growth of aluminum alloys, the relation of couple current vs loading time is determined with electrochemical methods. a formula in the theory is deduced which expresses the stress corrosion crack growth rate of lc4cs aluminum alloy, the results of mathematical modeling preferably correspond with examination

    再將「耦合作用」的猜想，引入鋁合金的腐蝕疲勞裂紋擴展過程中，用電化學的方法測定耦合電流與加載時間的關系，並從理論上導出lc4cs鋁合金應力腐蝕裂紋擴展速率的數學表達式，數學模擬的結果與實驗值具有較好的一致性。
  7. In this paper, by checking up the heat calculation about the experiment results of the single row tube and double waves belt, i come at the function of the heat transfer factor j and the reynolds number re, i also come at the function of the f r i ct i on factor ^ " and the reyno i ds number re

    本文還通過對單排雙波帶散熱器的實驗結果進行校核熱計算，回歸導出該種散熱器的傳熱因子j及摩擦因子f與雷諾數re的數學表達式，從而為用這種芯子根據廠家要求設計散熱器提供了理論依據。
  8. First, mathematical expressions for hoop strain based on linear elasticity theory and deformation plasticity theory, and thus diametral strain is derived

    模型推導過程是：首先根據線性彈性理論和變形塑性理論推導出周向應變的數學表達式，進而導出徑向應變。
  9. For example, the geometric effect and vignetting are simulated with the synthetic method in which they are modeled with ray tracing and then simulated with pixel - based processing. the effects of detector noise on imaging are simulated with the three - dimension model. the theory of pixel transfer function is extended and developed, and microscanned images of four patterns are simulated with good results

    本文具有如下幾個突出特點：用光線追跡法分析建模，而用基於象素處理的綜合方法，模擬了光學系統中的幾何效應和漸暈現象；利用三維噪聲模型，模擬了探測器噪聲對圖像質量的影響；對象素傳遞函數理論進行了擴展和延伸，給出四種工作模式的微掃描成像系統的象素傳遞函數的具體數學表達式，並利用這些表達式模擬了探測器的空間效應和微掃描成像的圖像效果。
  10. In the last part, the relationship of the field current with the operational factors of the turbo generator is difficult to express exactly, belonging to the complexity of building the generator model and the difficulty of identifying generator parameters, gp algorithm is presented, which is better than other method in symbol regress

    由於發電機的建模與參數辨識困難，發電機勵磁電流和機端量之間的關系難以用精確的數學表達式來描述。利用gp演算法在符號回歸中的應用，得出發電機勵磁電流和機端量之間的關系表達式，用於故障診斷，並通過算例驗證了該方法是有效的。
  11. Evaluate mathematical expressions quickly and accurately

    快速精確的對數學表達式求值
  12. On the basis of the magnetic circuit structure analysis for the particularity of the structure and the magnetic circuit of the double - stator hybrid direct drive motor ( dshbddm ), the mathematical formula for the important parameters - self - inductance and mutual - inductance of the winding for dshbddm was derived in detail by using the method for the simplified magnetic network model and the characteristic was analyzed

    摘要針對串聯磁路結構雙定子混合式直接驅動電動機結構和磁路的特殊性，在分析電機磁路結構的基礎上，利用電機的簡化磁網路模型，詳細推導出串聯磁路結構雙定子混合式直接驅動電動機的重要參數繞組自感與互感的數學表達式，並對其特性進行了分析。
  13. Based on the mathematical model for analyzing the seismic responses of submerged tunnels proposed by choshiro tamura and shunzo okamoto, the analytical model for calculating the stochastic earthquake responses of the whole underground structure was proposed and the formulas for evaluating the stochastic characteristics of the underground structural seismic responses were derived. the dynamical mean - square responses of the nanjing changjiang tunnel under gauss stationary random process were calculated. 3

    2將日本田村重四郎?岡本舜三提出的沉埋隧道地震反應分析的數學模型應用於地下結構隨機地震反應分析，利用數值分析方法建立了隧道整體隨機地震反應分析的數學模型，得到了地下結構整體隨機地震動力響應數字特徵的數學表達式，為地下結構整體隨機地震反應分析及動力可靠度的研究提供了一種分析途徑。
  14. This method obtains structure types and strokes of chinese characters through chinese characters mathematic expression, and then the whole document is divided into two blocks by utilizing structure types of chinese characters. in each block, the position selected to embed is chose by chinese character ’ s strokes and the watermarking bit. watermarking bits with a robust structure is generated by chaos encrypting and hamming checkout coding ; embedding is implemented through setting underline to font

    該方法通過漢字數學表達式，獲取漢字的結構類型和筆畫數，利用漢字的結構類型將整個文檔分成兩塊，在各塊中由漢字筆畫數和水印比特位共同確定水印加載的位置，通過混沌加密和海明校驗編碼將水印生成一種具有魯棒性的水印結構，然後通過設置字體下劃線將水印按對稱性的嵌入策略分別嵌入文本的兩塊中。
  15. A full mathematical model of optimal flow pattern design withengineering constraints was put forward, based on modern optimal control theory. an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine. according to integral optimization of turbine stages, a full physical model and mathematical expression were put forward for proposition of optimal flow pattern, including all performance parameters in turbine stages. this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state, fixed terminal condition and constraints for part of state terminal variables. the program was also worked out according penalty function method and conjugate gradient method. the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function

    把近代最優控制論方法引入軸流透平葉片的設計，在優化的軸流透平子午通道內，建立包括透平級內所有性能參量的最優流型命題的完整的物理模型及其數學表達式，並歸化為一個在給定初始狀態、自變量終端固定、部分狀態變量終端受有約束的條件下，使級的某一性能指標（如級的功率）達到最優的最優控制問題，應用「代價函數法」及「共軛梯度法」編制計算程序，計算得到符合給定約束條件、並使目標函數取極值的最優環量分佈，結果是令人滿意的。
  16. On the basis of couple polarization theory, the mathematical expressions of couple potential and corrosion rate of fresh bare metal are inferred, the theory modeling relations of couple potential vs time is corresponding to experimental results

    根據耦合作用理論，獲得了耦合電位、裸露的新鮮金屬腐蝕速率的數學表達式，數學模擬所得的耦合電位與時間的關系，和實驗結果有較好的一致性。
  17. By means of comprehensive study of the whole process to derive the calculation of relative gain variation, a mathematical formula how to make a well - founded understanding and correct use of the differential calculation method when making every efforts to accurately calculate the relative variation of the closed - loop gain of an amplifier was advanced based on another accurate calculation method given

    因此，本文通過全面考察推導增益相對變化量的計算全過程，根據所給出的另一種準確計算方法，重點提出了在要求準確地計算放大器閉環增益的相對變化量時，怎樣正確理解和運用微分計算方法的數學表達式。
  18. The thesis mainly studies the assistance model of the structure evolution when the hsla steel is heated, works out the mathematic expression of the grain boundary in the process of interaction between grain boundary and second - phase particle, and develops a new physical model when grain are pinned by the second - phase participle

    本文主要研究了碳鋼和微合金鋼在加熱過程中的組織演變規律的部分輔助模型，推導了晶界與二相粒子相互作用過程中變形晶界的數學表達式，建立了新的二相粒子釘扎晶界的物理模型。
  19. Lmpa, the relationship is f di = l 55xl0 - " e47j l t ) in this range, the relative error of the hydrgen permeabilty bbeen the experimental values and the formula values are less than 3 %, the durability test showed that after the cycle experiments of prcssure and tempebe for 30 days, the perfrmance of the membran did not change, at last, the theory of hydrogen permeaton was discussed, too. through this work, the pfepared surf ases modified zirconium memran can satisfy the requirement of the purity and the permeating fiux of hydrogen isotope gas

    Imp范圍內，鋁表面改性選擇滲氫膜的數學表達式為： （ 1320 i 155x10 」 exd l 「 t ）在這個溫度和壓差范圍內，滲氫系數的實驗數據計算值與數學公式計算值的誤差在3以內；鉻表面改性選擇滲氫膜的壽命考核實驗表明，經過連續30大的循環溫度、壓力實驗，膜的質量、性能無變化；並討論了膜的滲氫理論。
  20. C # scientific calculator and math expression parser

    這是用c #實現的科學計算器和數學表達式解析器。
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