numerical description 中文意思是什麼

numerical description 解釋
數據的描述
  • numerical : adj 數字的；數值的；用數字表示的。 （a） numerical order 號數。 a numerical statement 統計。 the ...
  • description : n. 1. 記述，敘述，描寫；記載。2. 敘事文；（物品）說明書；相貌說明書。3. 種類。4. 作圖；繪制。
  1. This paper uses numerical analysis methods to simulate two fighters fighting in the air by computer and researches all the problems at different postures of the fighters when fighting. the mathematical modeling is preliminarily researched and designed during the air action emulation of two fighters. a sort of description means which is found is more realistic for the simplified modeling of the fighters

    本文利用數值分析方法通過計算機模擬模擬戰斗機的空戰過程，研究戰斗機在各種空戰態勢下的戰斗使用問題，對雙機空戰模擬中的飛機數學模型進行初步研究與設計，找到一種較為符合實際的飛機簡化模型描述方法。
  2. Through the study of the style of knowledge description, the paper elaborates the numerical model knowledge, the symbolic experience knowledge and the instantial swatch knowledge. these three kinds of different knowledge have been used in loans risk classification in the paper. just as the using of the object oriented technique and the ai ( include es, ann, and the integrated of ann and es ) technique, can the paper realize the five - grade loans risk classification

    本文通過對知識描述形式的研究，表述了經驗符號性知識、模型化數量性知識和實例樣本性知識三種類型，通過對其行為特徵及轉換、集成的研究，將這三種異構知識引入貸款風險分類分析；採用面向對象技術和人工智慧的es 、 ann兩種形式及其結合，實現了貸款風險五級分類。
  3. Moreover, with the method of emerging hopf bifurcation of the system, the analytic conditions that the low - dimension continuous autonomous chaotic systems controlled by the project are given in theory. applying the conclusions we got to the practical systems, the method is shown by the theoretical description and numerical calculation that it is effective

    其次，從實際應用出發，提出了一種增強型的延遲變量反饋控制方案，同樣利用分析延遲系統產生hopf分支條件的方法，也給出了當用這種方案控制低維連續自治混沌系統時，在達到控制目標的條件下，控制參數間的一般解析關系。
  4. The non - singular extended 2 x 2 jones matrix is deduced to give the precise description of angular property under normal and oblique incidence. consequently, we draw a very important conclusion that the pif is insensitive to the incidence, and has a large numerical aperture

    詳細推導了適用於偏振干涉濾光片角度特性分析的無奇異點擴展2 2瓊斯矩陣，對正入射和斜入射下的偏振干涉濾光片光學特性進行了精確描述，並分析出偏振干涉濾光片具有大數值孔徑的重要特性。
  5. In this paper, we aim at establish heat and mass coupled transfer model in the building wall, the emphasis of this study lies in creating a coupled and non - linear diferential equation system for the heat air and moisture transfer in the wall, which can be described by means of continuum mechanics and irreversible thermodynamics, the most dominant factor is moisture conten 9la gas pressure pc and temperature t, for the description of heatair and moisture transport, the general mass balance equation can be expressed by the temporal change of moisture conten 9 l, gas pressure pc and temperature t that means, in order to create a closed solvable equation system, the other additional dependencies have to be found, which the other variable depending on the variables of the solution : moisture conten 6 l gas pressure pc and temperature to the model is verified by the numerical simulation software which has been developed about building wall.,

    根據節能設計要求，本文用熱力學的方法，並根據多孔介質中多相流體流動描述方面的最新研究成果? ?體積平均方程，建立了墻體熱、濕和空氣耦合熱質傳遞模型，並推導出熱、濕和空氣耦合傳遞等效擴散方程；找到建築墻體熱、濕及空氣耦合作用下熱質傳遞過程的主要影響因素濕容量_ l 、氣壓p _ c和溫度t 。開發了單體材料墻體熱質傳遞數值模擬軟體，用實測數據對軟體進行調試並對模擬計算結果進行了驗證。模擬出了單材料墻體在熱、濕和空氣耦合作用下建築墻體內的溫度和濕度分佈規律。
  6. The graphical realization methods for interactive calculation of transitional state are presented. based on the graphical realization principle, the transitional modulus calculation and composing calculation can be replaced by the graphical obtaining operation and graphical synthesizing operation respectively. and the heavy and complicated numerical calculation can be avoided during the description, extraction and integration of the transitional information

    提出了面向過渡狀態交互運算的圖形化實現方法，通過圖形參量與物性參量、圖形參量與特徵參量等關聯的建立，以過渡率特徵的圖形化獲取技術與合成技術分別取代過渡率特徵運算與合成運算，利用可視化手段有效地避免了過渡狀態信息描述、提取與綜合過程中各類復雜繁瑣的非線性數值運算。
  7. In this dissertation, the numerical simulation method of the solid phase field based on the lagrangian description and the gas phase field based on the eulerian description is first used in the numerical simulation research of the gas - solid injectors

    首次將固相場基於拉格朗日法和氣相場基於歐拉法的數值模擬方法引入氣固噴射器的數值模擬研究工作中，建立了合適的三維數理模型。
  8. Tribology system feature description based on numerical simulation method

    基於數值模擬方法的摩擦學系統特性的描述研究
  9. Many designs have been developed to obtain these data represented in alphabetical and numerical ways taken from the field or from videotapes. the most popular methods are check sheet, pen recorder, verbal description, and computer event recorder

    有許多方法可在現場觀察或觀看錄影帶時得到這些基本的數據，而以字母或數字型式表示，例如：檢查表
  10. In this paper, oil reservoir fine description has been applied, and by study of reservoir, structure and fluid features, fluid units have been divided and new geology models have been rebuilt. then logging data have been reinterpreted and reprocessed and numerical modeling results have been used. on base of these work, the residual oil distribution feature and regulation in the fluvial facies sandstone in gudao oil field south region has been scientifically studied

    本文主要運用油藏精細描述技術，通過儲層、構造、流體研究，劃分出流體流動單元，重建新的地質模型，在此基礎上對測井資料進行了重新解釋和處理，並運用數值模擬研究結果，對孤島油田南區河流相砂巖油藏剩餘油分佈特徵和分佈規律進行了科學研究。
  11. Compared with the numerical results presented by miyatake and iwashita, together with the experimental correlations in literatures, the results indicated that the model developed in this thesis was reasonable and it could be used in the description of the characterization of the shell side mass transfer

    通過與miyatake和iwashita數值解結果、以及其它文獻中存在的關聯式的比較，說明本論文建立的傳質模型是合理的，可以用於描述平行流組件殼程的傳質問題。
  12. 3 ) a novel martensitic transformation kinetics model for sma is proposed based on the phenomenological description of the martensitic transformation heat flow - temperature curve and on the linear relationship between the partial derivatives with respect to the temperature of martensite fraction and of gbbis free energy. numerical simulations by utilizing the proposed model are closer to experimental results than those from other models

    3 ）基於對馬氏體相變熱流-溫度實驗曲線的唯象模擬，以及馬氏體體積分數與熱力勢對溫度偏導數之間的線性關系，建立了一種新的馬氏體相變動力學模型，並與其他模型及實驗結果進行了比較。
  13. All concrete structures are exposed to volume changes caused by hydration reactions in the early age. if the volume changes are restrained, stresses is generated which will cause cracking when it overcomes the tensile strength. as the mechanical properties of early age concrete vary with time, especially the creep degree depends on the time elapsed and the time at loading, to calculate the stress of concrete structure is a complex nonlinear problem. the finite element method ( fem ) can take account of the evolution of the stiffness properties, the development of thermal strain, creep, shrinkage and so on. in this paper, a general approach for numerically simulating this type of behaviour is presented firstly. then, how to solve this problem is introduced by the general finite element software ansys using the initial stress method. finally, a detailed description of an example calculation that demonstrates the potential of the numerical simulation strategy follows

    早期混凝土由於水化反應都會產生體積變化.如果體積變形受到約束就會產生應力，一旦超過混凝土的抗拉強度就會產生裂縫.由於早期混凝土的力學性能是隨時間變化的，特別是徐變，它不僅與加載時間有關而且同時隨齡期而變化，因此計算早期混凝土結構應力是較為復雜的問題.有限單元法不僅可以考慮混凝土剛度的變化，而且可以考慮溫度、徐變、收縮等因素.本文利用初應力法對通用有限元軟體ansys進行了二次開發，通過工程實例計算了高層建築地下室側墻早期混凝土應力的變化過程，並提出了相應的抗裂措施
  14. Numerical simulation also conf irm this analysis that the fluid elastic - plastic model can approximately describe the shock compression and release process of ofhc copper in the teens gpa range, but for precise description, especially in the initial release stage, more detail constitutive model is needed

    數值計算結果也支持了這種分析：在十幾個gpa的壓力范圍，無氧銅的沖擊加載-卸載過程近似滿足流體彈塑性模型，但在精確描述，尤其對初始卸載階段的描述上，仍需要更準確的本構方程和物理模型。
  15. Abstract : a numerical model and experiments over pmma are used to evaluate the main assumptions used in the theoretical description of a diffusion flame established in a natural boundary layer. flow characteristics ( 2 - d boundary layer ) and surface thermal balance are identified as the critical assumptions to be evaluated. comparison of experiments, numerical results, and theoretical model serve to validate the assumptions leading to the definition of a mass transfer number but establish the need to model all three - dimensional features of the flow

    文摘:對pmma進行數字模擬和試驗，對描述自然邊界層擴散火焰理論的假設進行評價.我們把流動特性（二維邊界層）和表面熱平衡作為評價的關鍵假設.試驗、數字模擬和理論模型證實了對質量傳遞數值定義的假設是正確的，但研究也表明，有必要對流動特性進行三維模擬
  16. Particularly, the established form, efficiency and methodology and principles of petsc, give us a proper direction in numerical software development which is extremely important. with the explicit intention, the main contributions of this dissertation are : give a general description of the research background. the main research content are classified as numerical modeling, programming and software design

    以petsc為主線，本文的主要工作及貢獻包括： ?對當前高性能數值軟體領域的研究內容、現狀及發展趨勢做了較為詳細的調研與分析整理，歸納了數值建模與演算法研究、程序設計與性能優化、軟體開發思想與系統設計等三大數值軟體研究范疇。
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