近似理論 的英文怎麼說

中文拼音 [jìnsìlǐlún]
近似理論 英文
a roximation theory
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 論 : 論名詞（記錄孔子及其門徒的言行的「論語」） the analects of confucius
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  • 理論 : theory
  1. We are entirely justified in using the approximate theory.

    我們用近似理論就完全正當。
  2. Two different kinds of approximate theories for analyzing colored noise are employed in the nonlinear system. then effects of the colored nature of the noise on the statistical properties of the laser system, the stochastic resonance of bistable system, and the steady - state probability current of quasi - periodic system are investigated

    本文主要通過兩種不同的色噪聲近似理論，分析了非線性系統噪聲的有色性對激光系統的統計性質、準周期性系統的定態幾率流和雙穩系統中的隨機共振現象的影響。
  3. The approximate theory which applies to water tables of low slope is due to dupuit.

    應用於低坡度水面的近似理論來自於裘不依。
  4. This should be an incentive to apply the rrpa method with non - linear effective lagrangians to study other systems such as unstable nuclei near drip lines. for nuclei with the extreme value of n / z, low - lying collective excitations are found in isovector dipole modes, which are mainly due to the particle - hole excitation of weakly bound states near fermi surface and the isospin mixture effect

    將相對論無規位相近似理論推廣應用到奇特核集體激發態的研究，發現對于奇特核的同位旋矢量激發模式在很低能量下會出現軟模式的巨偶極共振，這主要是由於費米面附近粒子-空穴激發所形成的。
  5. The relativistic random phase approximation ( rrpa ) is a relativistic extension of the random phase approximation for studying microscopically nuclear dynamical excitations and giant resonances. the consistency of rrpa calculations requires two aspects : first, it demands that the relativistic mean - field wave " function of nucleus and the particle - hole residual interactions in the rrpa are calculated in a same effective lagrangian. second, the consistent treatment of rrpa within rmf approximation requires the configurations including not only the pairs formed from the occupied fermi states and unoccupied stat es but also the pairs formed from the dirac states and occupied fermi states

    自洽的相對論無規位相近似理論的自洽性要求有兩方面的內容：第一，描述原子核的激發態性質和基態性質時必須從同一個有效的拉矢量出發；第二，相對論無規位相近似計算，不但要考慮正能的粒子-空穴組態的貢獻，而且還要考慮從fermi海核子態到dirac海負能核子態形成的對激發的貢獻。
  6. Then based on kirchhoff approximation theory, the formula of the coherent and incoherent scattering intensity of plane wave from two dimensional dielectric normally distributed rough surface are derived, and the scattering intensity of a planar, rough surface of unit area

    然後從粗糙面散射kirchhoff標量近似理論出發，得到了平面波對高斯分佈的二維隨機粗糙面的相干散射和非相干散射強度表達式，並給出了單位面積粗糙面非相干散射的表達式。
  7. 4. based on the theory of kirchhoff approximating and the model of franceschetti facet field simulating, an algorithm for the computing the facet backscatter coefficients is presented

    4 .基於kirchhoff近似理論和franceschetti地面場景模擬模型，實現了一種根據小平面單元與sar之間的幾何關系計算小平面單元後向散射系數的演算法。
  8. In chapter 3, some theories of approximation are given from the point of mathematics and from physics

    第三章分別從數學的角度和物理的角度闡述了流固物體曲線拉伸流動問題求解的近似理論。
  9. In the section 2, firstly based on the diffusion approximation theory, the temporal characteristics of the reflectance and the transmittance were theoretically analyzed in turbid tissues ; secondly, the curves were simulated that the intensity and the pulse shape of the time resolved reflectance and transmittance versus the absorption a, the scattering s and the anisotropy coefficient g in two different boundary conditions : semi - infinite turbid media and homogeneous slab ; at last, the optical properties can be derived from the curves ; in the section 3, the conditions of ultra short laser pulses of different pulse - width and shapes has been theoretical analyzed and calculated, besides, the simulated the curves of the intensity and pulse shapes of the reflectance and transmittance in a homogeneous slab are obtained for use and future studying

    第二章中首先根據漫射近似理論對超短脈沖在以生物組織為典型的混濁介質中傳輸進行了理論分析，然後對兩種邊界條件下產生的漫反射、漫透射光脈沖強度和形狀隨各光學特性參數的變化情況進行了數值模擬，最後得到了混濁介質的光學特性參數與漫反射、透射脈沖強度與形狀的關系曲線。第三章對不同形狀和脈寬的脈沖光源入射到混濁介質中產生的漫反射、漫透射脈沖的強度和形狀進行了理論分析和數值模擬，並將高斯脈沖與方波脈沖情況進行了對比，得到了各種情況的漫反射、漫透射脈沖強度、形狀與各光學特性參數的關系曲線，這對從分析脈沖形狀中提取介質的光學特性參數的信息有重要的意義。
  10. In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach. the wing sections of naca4412 and naca0012 are applied to test the computational system. the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation

    本文分別用守屋的保角變換法和基於源匯渦分佈的面元法，建立了計算槳葉表面壓力分佈的數學模型；應用納維-斯托克方程的薄層近似理論模式和有限差分數值方法，建立了計算機翼表面邊界層內部流動的數學模型；應用槳葉表面邊界層內部粘性流動和外部勢流流動在邊界上的匹配演算法，建立了槳葉表面二相流流動的計算方法和相應的計算機程序。
  11. Approximate theoritical and experimental research development of cone penetration resistance in static cone penetration test

    靜力觸探錐頭阻力的近似理論與實驗研究進展
  12. Eno schemes are based on the approximation theory, which achieve high - order spatial accuracy by reconstructing piecewise smooth high - order approximate polynomial from the cell - averaging values. during the reconstruction, adaptive stencil technology, which automatically chooses the relatively smoothest stencil from all possible stencils, is adopted to guarantee essentially non - oscillation near the discontinuity

    Eno格式基於近似理論，採用自適應基架技術（即自動選取所有基架中相對最為光滑的基架） ，對網格平均值構造分段光滑的高階多項式來獲得高階空間精度，同時保證格式在間斷附近具有基本無振蕩性質。
  13. First is diffusion permeation : the theory about the calculating approximating of diffusion permeation in limited medium by roujean is used, and the four fluxes used in non - lambort - surface are also introduced

    首先是漫射透過率:我們利用roujean對有限厚度介質層的透射解析近似理論和思想求解之，並且對非朗伯面情形時的透射解析近似的四通量思想也作了相關介紹。
  14. Criteria for the nonlinear dynamic stability of rotative vehicles are derived by the liapunov ' s first method and the routh - hurwitz stability criterion, this criteria can be applied to the dynamic stability analysis of controlled rotative missiles, projectiles and rockets

    應用李亞普諾夫第一近似理論和勞斯霍爾維茨方法導出了旋轉飛行器的非線性運動穩定性判據，這個判據可應用於有控旋轉導彈的運動穩定性分析，也可應用到炮彈和火箭彈上。
  15. 2 the energy structures of galnp / gaalinp bulk material, quantum well, multi - quantum wells and strained quantum well were theoretically analyzed and calculated

    2利用k ? p能帶計算的近似理論，分別分析和計算了gainp體材料，量子阱，多量子阱以及彈性應變下的能帶結構。
  16. The main research work involves : ( 1 ) based on first order ode ( ordinary differential equation ) approximation theory and hopf bifurcation theory, the nonlinear motion stability of the train is studied emphatically

    本文所做的主要工作有： （ 1 ）基於常微分方程的一次近似理論和hopf分叉理論，重點研究了列車（車輛）系統的非線性運動穩定性。
  17. To compare and analyze, the similar theoretical solution of limitless pulled board with a kind of triangle hole or a kind of square hole is derived using knowledge of complex function, and the analytical solution is gained

    為了對比和分析，文中利用復變函數理論對帶有一種三角形孔、一種正方形孔的無限大受拉板的近似理論解進行了推導，得出了解析解。
  18. Based on the theory of kirchhoff approach and facet, the algorithm of computing the facets " backscatter coefficients is discussed. especially a method of computing part of the backscattered field is advanced

    基於kirchhoff近似理論和franceschetti的地面場景模擬模型，本文實現了根據小平面單元與sar之間的幾何關系計算小平面單元後向散射系數的演算法。
  19. First, we simply introduced the optical wave - guide theory : the fluctuation equations of planar wave - guide and the preparation of embranchment wave - guide. then based on maxwell equations and in the paraxial limit we deduced the formula needed in calculating fd - bpm. the refractive index section was n ( x, y )

    然後我們在maxwell方程的基礎上，根據慢包絡近似理論，在折射率截面為n （ x ， z ）的條件下，利用有限差分近似來代替偏微分方程，推出了有限差分光束傳播法計算所需要的公式。
  20. Firstly, in this paper the theory of light propagation and diffusion is introduced. the software of femlab based on finite element method is used to simulate the nir light fluence in the tissue, which is just the forward problem of optical ct

    本文首先介紹了光在組織中的傳輸及其擴散近似理論，並用基於有限元方法（ fem ）開發的femlab軟體模擬了光在生物組織中的分佈，此即光學ct的正向問題。
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