近似偏微分 的英文怎麼說

中文拼音 [jìnsìpiānwéifēn]
近似偏微分 英文
approximate partial differential
  • 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...
  • 偏 : Ⅰ形容詞1 （不正; 歪斜） inclined to one side; slanting; leaning 2 （只側重一面） partial; prejudi...
  • 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
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  1. When the isotropic waveguide is under the isotropic disturbances, the coupling term due to polarization, which is presented in the coupled - mode theory of the wei - ping huang, is n ' t included in this rigorous vectorial coupled - mode theory, exactly, the rigorous vectorial cmt does n ' t contain the coupling term due to polarization which is include in the scalar coupled - mode theory because this term is counteracted with the other coupling term neglected under weakly guiding approximation. as for anisotropic disturbances, we get the coupled - mode equations with arbitrary dielectric tensors. from them, we obtain the coupled - mode equations of the slowly varying term c ( z ) which is more simplicity

    當受到各向同性微擾時，我們發現嚴格的矢量理論所得到的耦合系數表達式中並不包括wei - pinghuang的理論中的偏振耦合項，更確切的說，偏振耦合項正好與因弱導近似而忽略的項相抵消，這就是標量理論所得到結果（有偏振耦合項）與矢量理論在標量近似下的結果（不含偏振耦合項）不一致的原因所在；當各向異性微擾時，我們得到了包含微擾介電張量各個分量的橫電磁場耦合波方程，討論了微擾介電張量各個分量對耦合的影響，而且從橫電磁場耦合波方程出發得到了形式更加簡單的只含有橫電場系數的緩變分量c _ （ z ）的耦合波方程和耦合系數表達式，並以弱導近似下的單模光纖兩正交偏振模耦合為例對耦合系數在不同條件下的取捨做了定性的分析。
  2. With the method of the lie group transformation, the symmetry of the equation governing one dimensional finite strain consolidation is discussed and, from the point of the symmetry, the feasibility to obtain the analytical solution of these nonlinear partial differential equations is discussed. where - after exact or approximate analytical solutions focused on different consolidation problems are obtained, these including : under some assumptions of relations of the void ratio with coefficient of permeability and effective stress, the method of lie group transformation is applied to solve the non - linear partial differential equation of large strain consolidation of homogenous saturated clay soil in semi - infinite domain with the consideration of the material and geometrical nonlinearity during consolidation procession. the implicit exact solution without considering the effect of self - weight of soil is obtained

    運用lie群變換方法討論了一維大應變非線性固結方程的對稱性，以及在該對稱性的意義下求解這類非線性偏微分方程解析解答的可能性，並就大應變非線性固結問題的多種情況求得了其完整的或者近似的解析解答，具體包括：基於有效應力與孔隙比以及滲透系數與孔隙比之間的關系的一些假定，採用李群變換求解考慮材料非線性和幾何非線性的半無限均質土體大變形固結非線性偏微分方程，得到了一個不考慮自重固結的完全解析解。
  3. Recently, there are some methods are utilized to study it, such as the modified lindstedt - poincare method, frequency - incremental method, stroboscopic method etc. more and more, scientists pay attention to it, as the study of solving partial differential equation is very important for the development of mechanics

    目前主要的近似求解方法有改進l - p方法、頻率增量法、改進的諧波平衡法、頻閃法等等。由於求解偏微分方程對于力學的發展起了很重要的作用，求解偏微方程特別是非線性偏微分方程引起了很多力學工作者的注意。
  4. 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。
  5. Lingnan kicks off this campaign during the uop is to convey to its new students how the lingnan " care and share " concept can make a difference to other people s lives, both within the local community and in far - away places

    嶺大選擇在迎新營當中開展這文具捐贈活動，正是為了讓新生更確切感受到關懷社區及與人分享的精神，讓他們明白看似微不足道的捐獻將可改變別人的生活，而關懷亦無分遠近不論是本地或至偏遠地區都應顧及到。
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