時空方程式 的英文怎麼說

中文拼音 [shíkōngfāngchéngshì]
時空方程式 英文
time space equation
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 空 : 空Ⅰ形容詞（不包含什麼; 裏面沒有東西或沒有內容; 不切實際的） empty; hollow; void Ⅱ名詞1 （天空） s...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 程 : 名詞1 （規章; 法式） rule; regulation 2 （進度; 程序） order; procedure 3 （路途; 一段路） journe...
  • 式 : 名詞1 （樣式） type; style 2 （格式） pattern; form 3 （儀式; 典禮） ceremony; ritual 4 （自然科...
  • 時空 : space time:[相對] space time continuum時空點 event; 時空度量 space time metric; 時空反演 space ti...
  • 方程式 : capeta
  1. Formula 2 - 12 as the basic function of quantum mechanics has long been an assumptive or experiential equation, but under complex function of analytical space - time, schrdinger wave function becomes the deduction from tast

    2 - 12式即量子力學的基本方程，在量子力學中它是一種假設方程，在解析時空的復變函數下，薛定諤
  2. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping

    本文的主要內容如下： 1 ）對翅片管蒸發器結構特點進行分析，選取適當的微元控制體，就干、濕和霜工況下對每個微元分別進行傳熱傳質分析，基於經驗關系式確定霜的有關參數，對于霜工況下的霜生長建立模型，經適當假設，運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型，為系統模擬奠定基礎； 2 ）對蒸發在大擾動下的開、停機過程，運用動態集中參數模型進行分析和計算，為更好地描述製冷系統運行的全過程奠定基礎，同時也為製冷系統實現自動控制提供一定的理論基礎； 3 ）對蒸發器正常運行過程，運用動態分佈參數和參數間定量耦合的觀點來分析和計算，為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性； 4 ）編寫翅片管蒸發器動態特性模擬計算程序，可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場，實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。
  3. City public the key problem that space face is design that growth method that development, wether is traditional or modern, all need to be existed in vigorous city replace, as if organism, since keep hypostatic spirit, need again the right alone metabolism ego renews, can keep on much more than only be used as a kind of concrete item reply the means, also is a kind of sport mode that have the timespace effect, passing to establish to study the - practice the investigative and circulating mode in - in -, realizing to design the process oneself of of keep on developping. in this process " practice " is a processor to changes spatial motive force, research is receive and dispatch the information

    城市公共空間面臨的主要問題是發展，無論是傳統的還是現代的，都需要在激烈的城市變革之中生存，如同有機體的生長方式，既要保持本質的精神，又需要不斷的新陳代謝自我更新，可持續的設計不只是作為一種具體項目的應對手段，同時也是一種具有時空效應的運動模式，通過建立研究? ?實踐? ?研究的循環模式，實現設計過程自身的持續發展。在這一過程中「實踐」是改變空間的西安建築科技大學碩士學位論文原動力，研究是收發信息的處理器。
  4. Adopting high resolution nested grid project and proper physical parameter, a mei - yu heavy rain process during eight july 22, 2002 and eight july 23, 2002 and the meso - b - scale systems alongwith it, were simulated by use of psu / ncar meso - scale nonstatic numerical forecast model mm5 in this paper. the simulation result describes successfully the spatial and temporal distribution of this rain process and the developing course of the concomitant meso - ? - scale systems

    本文利用psu ncar的中尺度非靜力數值預報模式mm5 ，採用高解析度套網格方案和適當的物理過程，對2002年7月22日08時到23日08時的一次強梅雨暴雨過程和伴隨的中-尺度系統進行了數值模擬，結果很好地描述了本次暴雨降水的時空分佈及相伴隨的中-尺度系統的發生發展過程。
  5. To air - condition temperature control system, in this paper, firstly, the mathematical model is established by using the differential equations method. though equations deducing to find the control object, which is the relationship between the rooms " temperature - time constants and control system ' s kinds of performance indexes, elucidate the effects of the big rooms " temperature - time constans to the control system. then combined with the requirements of air - condition craft to the control, it is proposed that the main question needed to be solved under the air - condition control system designing is its quickness

    本文首先針對空調溫度控制系統，建立數學模型，採用微分方程法，通過公式推導，找出空調控制對象? ?房間溫度時間常數與系統各項性能指標的關系，闡明房間溫度時間常數大對控制系統的影響，再結合空調工藝對控制的要求，提出了對空調控制系統的設計應主要解決其快速性問題。
  6. Compared with octree data structure, the omni - tree data structure could reduce the meshes " total numbers and get better mesh quality. this paper uses cell - centered finite volume spatial discretization and four - stage runge - kutta time - stepping scheme with some convergence acceleration techniques such as local time stepping and enthalpy damping

    在流場計算中，本文採用格心格式的有限體積法用二階中心差分對歐拉方程作空間離散，用四步龍格庫塔方法作顯式時間推進。
  7. In this paper, the upwind scheme and the central scheme are presented for solving 3 - d n - s equations using the cell - center finite volume spatial discretization and four - stage runge - kutta time stepping scheme, with standard convergence acceleration techniques such as local time stepping and implicit residual smoothing

    在n - s方程的數值計算上，採用了中心差分格式和迎風格式，用格心格式的有限體積法進行了空間離散，用四步龍格?庫塔法作顯式時間推進，並採用了當地時間步長和隱式殘差光順等加速收斂措施。
  8. 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。
  9. 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。
  10. According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

    本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。
  11. The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed

    本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。
  12. By use of - perturbation method with spatial discretization, the hydraulic transient system controlled by quasilinear partial differential equation was converted to a time - continuous linear system, so that the inverse problem of hydraulic transients under limited pressure could be sol ed with the optimal control theory for time - continuous systems

    採用-攝動法並經過空間離散，將由擬線性偏微分方程式控制制的有壓瞬變流系統轉化為時間連續線性系統，從而使有壓瞬變流限壓控制反問題能應用時間連續系統最優控制理論來求解。
  13. In the first part, the basic knowledge of particle scattering in meteorology and physics was introduced. the particles to be discussed include aerosol particles, fog droplets and raindrops and the em wave band in the discussion is near - infrared. in the second part, the mie theory was briefly reviewed and was applied to investigate the scattering characteristics of spherical atmospheric particles, the result shows that in the visibility measurement meter using forward - scattering method, when the working wavelegth is between 0. 8 m ~ 2 m, the scattering angle is between 25 ~ 40, the distinguishability and the relative scattering intensity would be better than those under other conditions. in the third part, the superellipsoid was used to describe a wide range of shapes such as spheres. ellipsoids and cylinders. an improved t - matrix method which can be used to calculate arbitry shaped particle ' s scattering field was introduced, and the scattering characteristics of non - spherical atmospheric particles was investigated with this method

    計算結果表明，從相對散射強度、同一方向上不同粒子散射的可區分程度來看，在散射式能見度探測儀器中，工作波長介於0 . 86 m 2 m ，探測角度選取前向25度40度時，探測的結果將會是比較理想的。第三部分中，使用超橢球方程來統一描述各種非球形粒子的形狀，然後使用t矩陣方法計算了一些形狀的非球形粒子的近紅外散射特性。另外，在本文中還針對球形粒子的散射場提供了一種三維可視化方法，使對散射場強度的空間分佈的理解更加簡單，直觀。
  14. In this paper, the deposition evolution process in qtx reservoir are studied, the incoming water and sediment, the operation data, and the time and space distribution of longitudinal and lateral sedimentation in reservoir are analyzed in detail, and the longitudinal scouring and sedimentation and lateral deformation law in reservoir tidal flat and mainstream under different operation way are summarized in every operation period

    本文以黃河青銅峽水利水電樞紐工程水庫淤積演變過程為研究對象，對青銅峽水庫來水來沙組成、水庫運行資料、水庫縱橫向泥沙淤積時空分佈等進行了較詳細的分析，總結了青銅峽水庫各個運行時期不同運行方式下水庫灘槽縱向沖淤和橫向變形規律。
  15. The design undertaken mainly from the following aspects : 1, mechanism ddesign : included the base and the joints : 2, trasmission mechanism design : adopted a synchronous toothelike transmission bell ; 3, balance system design : adopted springs and a brake and a lay air cylinder ; 4, design parameter and verify alculation ; 5, established motion equation by d - h method ; 6, simulated the motion locus by matlab software ; 7 ^ mapping out the part drawing or asesembly drawing

    本設計主要是從以下幾個方面入手： 1 、機構設計：包括底座和臂關節的設計； 2 、傳動機構設計：將驅動電機安裝在底座上，利用同步齒型帶、離合器傳遞手臂的動力；利用齒輪傳動帶動底座回轉； 3 、平衡系統設計：採用了彈簧平衡系統、電磁式制動器和單向延時氣缸； 4 、設計參數和校核計算； 5 、用d ? h法建立運動學方程； 6 、利用matlab軟體對手臂的運動空間進行模擬； 7 、利用autocad2000繪圖：包括零件圖和裝配圖。
  16. In this work, we detailedly introduced the whole ideas of rkdg finite element method and the theory of constructing gas - kinetic schemes based on boltzmann equation. and then presented a kind of new computational method for solving id and 2d compressible euler equations, i. e. firstly, we discretize euler equations in the space with discontinuous galerkin finite element method ; secondly, we discretize temporal variable t with runge - kutta formula ; thirdly, for numerical fluxes constructing, we give two kinds of different numerical fluxes - kfvs and bgk numerical fluxes by using gas - kinetic schemes

    本文分別對rkdg有限元方法的整個思想和基於boltzmann方程的分子動力學格式的構造思想給予了詳細的介紹，並分別結合rkdg有限元方法與kfvs數值通量和bgk數值通量的構造方法，給出了一種求解一維、二維可壓縮流體力學方程組新的計算方法，即，我們先用間斷有限元方法進行空間離散，然後再對所得到的半離散格式使用runge - kuttatvd方法進行時間離散，得到全離散格式。
  17. Finally a set of equations with initiate values for boundary value problem is established where the velocity potential and its normal derivative are unknowns. because the model includes the effects of both the time and space to the velocity potential of free surface, it can be applied to strong nonlinear wave. as examples, solitary wave is computed in the numerical flume

    推導給出計算域內以所有節點波勢函數和波面位置高度的時間增量為未知量的線性方程組，並同時考慮時間因素和空間變位對波面勢函數的影響，在預設的計算精度下，通過時步內的循環迭代逐一確定每個時步上的波面運動位置，從而建立了一種可適于求解強非線性波浪變形計算的數值模式。
  18. In the end, when the domain is finite, b is a meet - irreducible element or 6 has an irredundant finite meet - decomposition, a sufficient and necessary condition that the solution set is nonempty is given and the number of distinct minimal solutions is formulated

    最後，當論域為有限集， b為交既約元或有不可約有限交分解時，給出了方程inf _ （ i j ） （ a _ j ， x _ j ） = b解集非空的充要條件以及極大元的個數公式。
  19. Any massive body leaves an imprint on the shape of spacetime, governed by an equation einstein formulated in 1915

    任何在時空形狀上留下痕跡的具質量物體，都適用於愛因斯坦在1915年制定的一條方程式。
  20. The equations describing the vibration become inconsistent unless spacetime either is highly curved ( in contradiction with observations ) or contains six extra spatial dimensions

    除非在時空高度彎曲（與觀測結果矛盾） ，或是含有六個額外的空間維度下，描述振動的方程式才不會有矛盾之處。
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