近似論 的英文怎麼說
中文拼音 [jìnsìlún]
近似論
英文
probabiliorism-
The adequacy of this approximation is considered later.
這種近似方法的適用性將在後面再討論。We are entirely justified in using the approximate theory.
我們用近似理論就完全正當。There has been many papers to discuss the in - medium quark and gluon condensates in nuclear matter which use the models with su ( 2 ) l su ( 2 ) r sym - metry. now, we make use of the chiral model su ( 3 ) l su ( 3 ) n including the baryon octet to discuss the quark condensate < qq > in strange matter, where q is an up or down quark field. on the one hand, from the experimetal data, it is found that < qq > vac = - ( 225 25mev ) 3, on the other hand, with the hellmann - feynman theorem, quark condensate can be evaluated on the hadronic level. in this paper, we will investigate the quark condensate in strange matter with the chiral symmetry su ( 3 ) l x su ( 3 ) rspontaneous breaking lagrangian to obtain the variation of the quark condensate in the strange matter when the baryon number change. it can be applied to understand the neutron stars when the neutron star are considered to be constructed by the strange matter. because nertron stars are homogeneous and at very low temperature, we will use the mean - field approximation and zero temperature throughout this paper
鑒于已有大量文獻討論了核物質中的夸克凝聚,本文將討論在奇異物質中的夸克凝聚。而在介質中的夸克凝聚的基本公式可由hellmann - feynman理論導出,所以運用手征對稱自發破缺拉氏量以及平均場近似,我們就可以討論在奇異物質中的夸克凝聚,由所計算的結果表明: ( 1 )奇異物質中的夸克凝聚隨奇異物質密度的增大而單調減小。 ( 2 ) -凝聚的出現對衰減率有影響。The approximation analysis result of band dipole model is obtained on the basis of the theory of mfl. the electromagnetic distribution feature of the defect in the steel panel is studied by means of simulation. the leakage magnetic distribution of the two defects and four defects plural and the defects in the column differently in the width are also assayed. conclusions that factors affecting flaw magnetic leakage to the panel also affect the column and magnetic leakage bx should be the feature of the flaw identification to several flaws are drawn
在對漏磁檢測原理進行詳細介紹的基礎上,得出了帶偶極子模型的近似解析解,並以有限元數值模擬分析為主要手段,以鋼板上缺陷為對象,分析了各因素對缺陷漏磁場產生影響的不同規律,同時模擬分析了板上平行的兩條裂紋,四條裂紋以及柱體上寬度不同時的裂紋的漏磁場分佈特徵,得出結論:影響板上缺陷漏磁場的諸因素會對柱體上缺陷漏磁場產生同樣的影響;對于多條裂紋,宜用漏磁分量bx作為缺陷識別的特徵量。The main contents are as follows. ( 1 ) filter cloth and the surrounding soil mass are taken as an approximate isotropy in horizontal section, the relationship of stress and strain is studied, the anisotropy is fully considered, the constitutive model of filter cloth reinforcement fly - ash compound is obtained, it is tested with numerous indoor experiments. ( 2 ) the permeable coefficient is introduced into the constitutive relationship of soil mass with relevant seepage theory ( kozeny - carman experience formula ). the test of filter cloth depositing hi the condition of long term seepage flow is done hi the dissertation, the varying regular of permeable coefficient without pressure is presented
本文首先對國內外的研究現狀作了回顧和總結,然後主要針對土工織物加筋粉煤灰復合體的本構關系和計算理論進行研究,主要內容有: ( 1 )將土工織物和周圍土體視為一種近似的彈性非線性橫觀各向同性體,研究它的應力應變關系,充分考慮它的各向異性,得到土工織物加筋粉煤灰復合體的本構模型,然後通過大量室內試驗進行分析驗證; ( 2 )引入有關滲流理論,即柯茲尼-卡爾曼( kozeny - carman )經驗公式,將滲透系數引進到土體本構關系中。Second, this paper analyzes the time - frequency distribution of the clutter from airborne pulse doppler radar ( pdr ). the side - lobe clutter, which is the main factor to influence the pdr, is analyzed and calculated. based on the simulation of typical geometry of the land, we analyze and discuss the side - lobe clutter and concluded that the dft of can be considered as the phase of the coho
並且根據各種典型地貌的近似模擬,從統計特性上和頻率域上對脈沖多卜勒雷達的旁瓣雜波進行了分析討淪,還得出脈沖多卜勒雷達的dft可以近似地看作相參積累,並在程序的編制中利用了這一個結論。In the model the film thickness in the passage was obtained at first using two phase flow theory ; then, similar analysis solution of concentration distribution of the pollutant in liquid phase and biofilm was obtained through mass component equation of pollutant in gas - liquid phases combined with the biochemical kinetic equation of mass transfer in biofilm and dismission of oxygen limited ; at last, the distribution of pollutant along the filter height and the waste gas purification efficiency were obtained
該模型首先運用兩相流理論獲得了通道內液膜厚度,然後通過污染物在氣相、液相的質量組分方程,結合生物膜內的傳質與不?慮氧限制的生化反應動力學方程,獲得了污染物在液相和生物膜中濃度分佈的近似分析解,最終得到污染物在氣相中沿塔高的濃度分佈及廢氣凈化效率。During the course of the example computing this paper also discusses how to get the rigid measure of the solid tires, equivalent mass of the boom and equivalent rigid measure of the boom
在實例計算過程中也給出了實體橡膠輪胎的剛度和階梯懸臂梁的等效質量、等效剛度的近似計算方法,這些演算法使理論計算簡單可靠。Newton's theory of gravitation is an approximation of a more general theory.
牛頓的引力理論只是一種更普遍理論的近似形式。Abstract : the more detailed mathematial derivation and analysis of watson transformation in diffraction theory of ground wave is made by two different method. in derivation necessary and approximate conditions requred to make the transformation are specially discussed
文摘:採用兩種不同的方法對地波繞射理論中的瓦特松變換問題做了較詳細地數學推導,並著重討論了做瓦特松變換的要求的必要條件與近似條件。A new coupled - mode theory based on scalar modes is presented for the anisotropic waveguide with random disturbance via helmholtz equation and a modified dielectric tensor
摘要從亥姆霍茲方程出發,得到了各向異性光波導在弱導近似下的耦合模理論。An arbitrary shaped line current on a horizontal plane is divided into many small line segments and approximated by hertzian diploes, then both the near and far em - field of the line curennt is approximated by the summation of the complete near and far fields of hertz dipoles
水平面上任意形狀線電流分割為許多小段之電流,每一小段之電流近似為赫芝偶極,則在三度空間任意座標平面上無論遠近之電磁場即可以赫芝偶極之遠近完整電磁場加總合成近似之。Collisonal quantum interference ( cqi ) was observed in the intramolecular rotational energy transfer in the experiment of the static cell, and the integral interference angles were measured. to observe more precise information, the experiment in the molecular beam should be taken, from which the differential interference angle can be obtained precisely. in this paper, the theoretical model of cqi is described in an atom - diatom system in the condition of the molecular beam, based on the first - born approximation of time dependent perturbation theory, taking into accounts the anisotropic lennard - jones interaction potentials. the method of observing and measuring correctly the differential interference angle is presented. the changing tendencies of the differential interference angle with the impact parameter, velocity, and et al. are discussed
分子內部轉動傳能的靜態池實驗觀察到了碰撞量子干涉效應( cqi ) ,並且測得積分干涉角,為了獲得更加精確的分子內部轉動傳能的碰撞量子干涉效應信息,實驗就必須要採用分子束實驗進行.本文理論上採用各項異性相互作用勢,應用含時微擾理論的一級波恩近似,假想在分子束實驗的條件下,建立在原子-雙原子分子體系中碰撞量子干涉的理論模型.理論上推導出微分干涉角具體表達式,通過計算定性地討論了微分干涉角隨著碰撞參數、速率等的變化趨勢,同時初步探討了實驗的正確觀測途徑,得出了採用分子束進行實驗觀測的實驗方法,為進一步進行分子束實驗提供了理論基礎,對實驗的進行起到了一定的借鑒作用Applying the results to optimal controller to realize the minimizer of the cost function of mkdv - burgers equation under neumann and dirichlet boundary control. secondly, using inertial manifold and approximate inertial manifold theory, the approximate inertial manifold under fourier bases is given and we construct a set of odes of three modes to obtain the long - time dynamic behavior
其次,利用慣性流形和近似慣性流形理論,給出mkdv - burgers方程在fourier基下的近似慣性流形,並且把這一方程所確定的無窮維動力系統約化為一組三模態下的常微分方程組,從而研究這一方程所確定的動力系統的長期動力學行為。In this paper, a crank - nicolson mixed element method, a nonlinear galerkin mixed element method for the non stationary conduction - convection problems time second order accuracy fully discrete formats and a two - level mixed element method with backtracing for the stationary conduction - convection problems are presented and analyed, respectively, an error analysis are provided for the crank - nicolson method of time discretization applied to spatially discrete galerkin mixed element approximations of the nonstationary conduction - convection problems
本文分別給出了非定常的熱傳導-對流問題的crank - nicolson混合元法時間二階精度全離散格式,非線性galerkin混合元法時間二階精度全離散格式以及定常的熱傳導-對流問題回溯二重水平法。討論了時間上的crank - nicolson離散方法應用於非定常的熱傳導-對流問題的空間離散的galerkin混合元近似。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。The card will look similar to a photocard driving license, which is similar in size to a credit card. also being considered is having the individual s fingerprint or iris image stored in the memory chip of the card to identify the cardholder and prevent any fake cards
公民咭外型與含照片的駕駛執照相似,大小則近似信用咭。為了防止偽咭,咭內晶片會載有持咭人的指模或虹膜影像,此舉引來輿論關注。This dissertation emphasizes on the creation of image space, the author present a display system in which screen moves with a sinusoidal velocity profile to create image space. this paper uses linear approximation to make the system display homogeneous graphic and analyzes worst - case positional error due to linear approximation
本論文重點分析了顯示單元中成像空間的構造,提出屏幕按正弦曲線運動的方式來構造成像空間,用線性近似的方法得到均勻的圖像,並分析了由於線性近似帶來的最大屏幕位置誤差。For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr
本文對于微腔半導體激光器,提出站模型,能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性,利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論;對于電流i噪聲、自發發射壽命_ ( sp )噪聲、自發發射因子噪聲、光子壽命_ p噪聲,以及電流調制、 _ ( sp )調制、調制、 _ p調制,在小信號近似下,得到了相應的激光器的傳遞函數;在大信噪比的前提下,對激光器進行了頻域分析,分別計算了它們在不同參數下的信噪比增益,分析了其抗噪聲性能。Using the degree of depolarization, cause of depolarization was discussed, and the droplet can be viewed as a sphericity in the lighter fog
由退偏振度隨霧濃度的變化討論了退偏產生的原因,指出霧濃度較低時,霧滴可近似視為球形。分享友人