積分下限 的英文怎麼說

中文拼音 [jīfēnxiàxiàn]
積分下限 英文
integration
  • 積 : Ⅰ動詞（積累） amass; store up; accumulate Ⅱ形容詞（長時間積累下來的） long standing; long pending...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 下 : 下動詞1. （用在動詞后,表示由高處到低處） 2. （用在動詞后, 表示有空間, 能容納） 3. （用在動詞后, 表示動作的完成或結果）
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 積分 : 1. [數學] integral; integrate; integration 2. [體育] （積累的分數） accumulate points
  1. The integral equations governing the three - dimensional viscous flow inside the turbo - machinery in the rotating coordinate system are presented in this paper, the viscous effects are simulated by the distributed body force described by professor denton j. d. the time - marching method and explicit finite volume difference scheme are employed to solve the flow inside the turbo - machinery

    本文給出了相對旋轉坐標系下葉輪機械內部三維粘性流動的守恆型積分型方程組，利用dentonj . d .教授的粘性體積力法來模擬粘性對葉輪機械內部流動的影響，採用時間推進法和有限體積差分格式對葉輪機械內部的流動進行求解。
  2. In chapter two, we consider full disceret scheme of mixed finite element methods for the following initial - value problems of linear integro - differential equations of parabolic in this chapter, we give the error analysis of this full discrete scheme and get optimal error estimates for the discrete solutions of u and p

    第二章討論下述線性拋物型積分微分方程初邊值問題混合有限元方法的后差全離散格式。給出了該全離散格式的誤差分析，得到了離散解逼近未知函數u以及伴隨速度p的關于空間和時間的最優階誤差估計。
  3. Based on the theory of technical innovation and technical innovation diffusion elaborated, as well as fluxionary calculus and game theory, the thesis analyses corporation adoption with game theory in the process of technical innovation diffusion : analyzes in the situation of information symmetry and information asymmetry the gambling between the supplies and the latent users of innovation, discusses the mechanism of the phenomenon " reversion choice " with emphasis in the situation of information asymmetry, and also introduces signal transmission model and information screen model to realize pareto improvement ; at the same time it analyzes in the situation of complete rationality and limited rationality the gambling between the latent users of innovation

    依據已闡述的技術創新和技術創新擴散理論，以及微積分、博弈論等相關理論，對技術創新擴散中企業採用行為進行了博弈分析:分析了信息對稱和信息不對稱情況下創新供給者與創新潛在採用企業之間的博弈，重點討論了信息不對稱時「逆向選擇」現象發生的機理，並引入信號傳遞模型和信息甄別模型以實現帕累托改進;同時分析了完全理性和有限理性情況下創新潛在採用企業間的博弈。
  4. Operations guide : click play entered the game, select the first one, the use of sub analogy, you have a portrait of two chutes, blue for health, yellow for the physical, a key to the roundabout hack, and s keys to normal hack, and d keys to xiapi, with the normal direction of the same key, k enter the name of the game : welcome 4455 miniclip games network, the site domain name to remember : 4455. cc and 3839. cc

    操作指南：點擊play進入游戲，選擇第一關，以次類推，你的頭像有兩個槽，藍色為健康，黃色為體力a鍵為迴旋砍， s鍵為正常砍， d鍵為下劈，方向鍵與正常相同，空格鍵為撞擊對手，游戲中還會有4片金子收藏，游戲后會獲得積分啊：此外，打碎一些箱子會有救命藥水來補充，其中黃色藥水是體力補充，使用時按數字小鍵盤的「 1 」 ，藍色藥水是健康補充，按「 2 」 ，紫色藥水為隱身，按「 3 」即可，有時間限制的，可以看你的頭像啊。
  5. The purpose of this dissertation is to study the lagrangian method and conservative rezonning algorithm. finite volume scheme is used for lagrangian equations of hydrodynamics. because of the pressure gradients " influence upon velocities and energy, computational scheme is proposed for momentum equation on two control volumes in order to suspend the time when the mesh becomes distorted

    本文的目的是研究lagrange方法及重映演算法，主要內容可分為以下幾個方面：首先從積分形式的二維lagrange流體力學方程組出發，用有限體積格式進行計算，考慮壓力梯度分佈對速度和能量改變的影響，構造了在兩個控制體上的動量方程的計算格式，使得速度的改變受其周圍八個壓力的影響，在一定程度上推遲了網格相交的進程。
  6. With straton - chu intergral as the theoretical basis and by means of green ' s function in infinite uniform media, the electromagnetic shift describes the propagation process of quasi - stationary electromagnetic field in lower - half space

    電磁偏移以斯特萊頓朱型積分為理論基礎，藉助于無限均勻介質中的格林函數，描述了似穩電磁場在下半空間的傳播過程。
  7. Based on the fundamental solution of two perfectly bonded elastic halfspaces, and using the boundary integral equation method and the finite - part integral concepts, the problem is reduced to a hypersingular integral equation in which the unknown function is the crack opening displacement discontinuity

    首先根據雙材料空間的彈性力學基本解，使用邊界積分方程方法，在有限部積分的意義下導出了以裂紋面位移間斷為未知函數的超奇異積分方程。
  8. This technique combines the edge - based finite - element method with physical optics ( po ) and physical theory of diffraction ( ptd ). the hybrid technique is applied to compute the scattering fields from the electrically large bodies with cracks and cavities on their surfaces. it is also used to analyze the scattering characteristics of microstrip antennas residing in a cavity mounted on metal objects with finite sizes

    本文採用edge - basedfem為基本方法，結合物理光學法（ po ） 、物理繞射理論（ ptd ） 、邊界積分方程（ bi ） 、區域分解技術（ ddm ）和完全匹配層（ pml ）吸收邊界條件等求解方法構成的混合方法，對電磁散射和輻射問題進行了研究，主要包括以下內容：提出了一種edge - basedfem與物理光學方法和物理繞射理論相結合的混合方法? fem po - ptd方法，並將該混合方法應用於帶有腔體或槽縫的電大尺寸導體目標的電磁散射特性分析和位於有限導體目標上的背腔式微帶貼片天線的電磁散射特性分析。
  9. Dynamic control of the limit water level belongs to non - structural measures of reservoir operation. with the analysis of the cause and rule of flood in the catchments and taking advantage of hydrology and metrology information, the operable method can be obtained which not only satisfies the flood prevention but also takes full advantage of flood resources, and the upper and lower limits of the limit water level are determined with serial hydrology calculation. then, the rule of using the upper and lower limits is put forward to reach a beneficial flood operation with small risk

    汛限水位動態控制方法屬於水庫風險調度的非工程措施范疇，通過分析流域洪水的成因和庫區降雨及致洪規律，結合水庫的蓄泄能力，積極慎重的利用水文氣象預報信息，研究既能滿足防洪要求，又可充分利用洪水資源的可操作性的調度方法，利用水文系列的連續演算方式推求汛限水位的變化范圍，提出使用汛限水位上下限的原則，達到風險較小、效益較大的目的。
  10. In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples

    第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。
  11. Usually, single vector sensor will obtain infinite gain if noise energy flow can be counteracted in whole space

    在理想情況下，若噪聲場為各向同性噪聲場，則通過聲能流長時間積分，單個矢量水聽器便可獲得無限大的增益。
  12. In order to instantly and real time eliminate harmonic and compensate reactive power, the definition of traditional reactive power, an integral average during a period, which is confined to apply under some circumstances. for example, when the load power varies swiftly, it will lead to can " t compensate reactive power rapidly

    為了實時、快速的補償無功功率和消除諧波，傳統的基於平均值計算出來的功率因數，是以一個周期內積分而得出來的平均值，這在某種情況下就限制了它的應用，如系統負載功率快速變化時，就不能做到迅速、實時地補償無功。
  13. Fix on up and down limit and computational methods of convolution integral

    卷積積分上下限的確定與計算方法
  14. It is well known that for an optical pulse, its distribution in time domain is infinite. but only a limited time window width t _ ( w ) may be selected in numerical calculations because of the limitation of the microcomputer. therefore, the selection of t _ ( w ) is also a key aspect that should be considered carefully in numerical simulations

    基於此，本文提出了利用分步傅里葉方法計算光脈沖在光纖中傳輸時間窗口的選取方法，給出了正確模擬光脈沖通過不同長度的光纖后光脈沖的變化所要選取的時間窗口（即計算過程中所取的積分上下限之差） 。
  15. It has been shown by our calculations that conductor loss is greatly reduced under velocity matching with relatively thick coplanar waveguide electrodes and thick buffer layer, but the characteristic impedance can not match with that of the external circuit at the same time, and the modulation bandwidth is confined in this case

    然後，用一般的橢圓積分計算了普通共面波導型調制器的有效折射率、特徵阻抗和導體損耗系數。通過計算發現，採用厚電極和厚緩沖層結構，在實現速度匹配的情況下，可以大大減小導體損耗，但是由於阻抗不能同時滿足匹配，調制帶寬受到限制。
  16. The practical methods of signal pre - processing ( anti - disturbance filtering, data smoothing ) and character extraction ( differential limitation, absolute peak value, peak - to - peak value, area of wave and self - adaptive threshold adjustment ) are introduced

    並介紹了一些實用的信號處理和特徵提取演算法，包括可以實時運算的用於抑制干擾的濾波器和數據平滑演算法及用於定量分析的差分超限數、絕對峰值、峰-峰值、波形下面積和自適應門限調整等演算法及其應用。
  17. Based on those, the concept of chilling process was put forward according to the lowest biologic temperature of main tropic and south sub tropic crop and fruit in guangdong and the low temperature ( environment temperature 5. 0 ) which is harmful to those crop and fruit. with the lowest air temperature ( the daily lowest air temperature ) x1, the lasting days of low temperature x2 and an integrative physical element - - negative accumulated temperature x3 in which the effect of the intense and lasting days of low temperature were considered, the correlation coefficient of those indexes were calculated and analyzed, and the results showed that there are apparent linear correlations among them

    在此基礎上，以廣東主要熱帶南亞熱帶作物的生物學下限溫度為依據，從這些作物受寒害的起點溫度（環境溫度5 . 0 ）出發，提出了寒害過程的概念，並用寒害過程低溫的強度（逐日最低氣溫） x _ 1 、低溫的持續時間（天數） x _ 2及考慮了低溫的強度和持續時間綜合作用的物理量負積溫x _ 3這3個指標來描述寒害的強度，研究了廣東歷年冬季寒害的變化，分析了這3個指標間的相關系數，結果表明它們之間互相存在顯著的相關關系。
  18. Firstly, based on the classical theorem of limit analysis, the von mises yielding condition and finite element method technique, two common mathematical programs for the determination of the lower and upper bounds are built and solved by an iteration algorithm directly

    首先，基於塑性極限載荷分析中的上下限定理和有限元離散技術，推導和給出了一般結構極限載荷上下限計算的數學規劃的普遍格式和相應的積分數值計算公式。
  19. 9. 8 american express card travel insurance and benefits, including but not limited to those listed below, will not apply to flights taken with frequent flyer tickets, including frequent flyer tickets obtained by using points converted from a program account : travel accident insurance

    9 . 8使用飛行常客計劃機票之旅程，包括以轉換自計劃戶口的積分換取之飛行常客計劃機票的旅程，將不能享用運通卡的旅遊保險及優惠包括但不限於以下各項:旅遊意外保險旅遊延誤及損失保障
  20. In this thesis a numerical model to solve the planear 2 - d depth - integrated flow ( dif ) has been established with irregular body - fitted mesh finite volume method and explicit maccormack predictor - corrector method and applied to the study of damming caused by a bridge pier under 14 working conditions varied with the combination of different pier shape. flow rate and contraction ratio

    本論文採用非規則貼體網格有限體積法和顯式maccormack預測-校正法求解平面二維水深積分方程，對明渠水流運動的數值模擬方法進行了研究，並且應用該數值模型計算了14種不同的橋墩體型、來流、收縮比的組合工況下的橋墩壅水問題。
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