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media
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  介质
    Study on the Application of Irreversible Thermodynamics in the Problems of Porous Media Seepage
    不可逆热力学理论在多孔介质渗流问题中的应用研究
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    Study of Some Electromagnetic Scattering and Inverse Scattering Problems for Chiral Media
    手性介质中某些电磁散射和反散射问题的研究
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    The Investigation of Related Nonlinear Effects in Electromagnetically Induced Coherent Media
    电磁诱导相干介质中相关非线性效应的研究
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    Study on Theory and Solving Method for Propagation and Interaction of Finite-amplitude Waves and Solitary Waves in Fluid and Solid Media
    流体与固体介质中有限振幅波、孤立波的传播和相互作用的理论与求解方法研究
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    Some Studies on Properties and Applications of Negative Refractive Media
    负折射介质特性与应用的若干研究
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  媒质
    STUDY OF THE ACOUSTIC NONLINEARITY PARAMETERS IN HIGH ATTENUATION BIOLOGICAL MEDIA
    高声衰减生物媒质非线性声参量的研究
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    STUDY ON THE NONLINEAR ACOUSTIC PARAMETERS IN HIGH ATTENUATION OF BIOLOGICAL MEDIA
    高声衰减生物媒质非线性声参量的研究
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    NONLINEAR THEORY OF DISTORTION OF BOUNDED ULTRA- SONIC BEAM IN RELAXATING MEDIA
    弛豫媒质中有限束超声波的非线性传播畸变理论
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    STUDY OF EFFECTIVE ELECTROMAGNETIC PARAMETERS OF GRANULAR MEDIA
    颗粒媒质等效电磁参数的研究
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    The Interface Effect of Bounded Random Media
    有界随机媒质的边界效应
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  “media”译为未确定词的双语例句
    THE THEORY OF RESONANTLY ENHANCED FOUR-WAVE MIXING IN ABSORBING MEDIA
    共振吸收增强的四波混频理论
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    THE ENERGY SPECTRA RESULTING FROM SLOWING DOWN OF ELECTRONS WITH ENERGY FROM 15 keV TO 1 MeV IN MEDIA
    能量为15keV——1MeV的电子在物质中的慢化谱
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    STUDY OF CH_2Br_2, CH_2I_2, CH_3F AND D_2O FIR MEDIA AND LASER LINES
    对CH_2Br_2、CH_2I_2、CH_3F和D_2O远红外激光工作物质和谱线的研究(详细摘要~*)
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    Influences of tissue composition and structural features of biological media on the ultrasonic nonlinearity parameter
    生物组织的组分和结构特性对非线性超声参量值的影响
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    ANALYSIS OF BEAM PROPAGAION THKOUGH THICK NONLINEAR MEDIA BY VARIATIONAL APPROACH
    光束在厚非线性光学材料中传播的变分法分析
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  media
A Fast, Bandlimited Solver for Scattering Problems in Inhomogeneous Media
      
The numerical treatment of two-dimensional scattering in inhomogeneous media
      
PRODUCTION OF ANTIBACTERIAL AND ANTIFUNGAL METABOLITES BY STREPTOMYCES VIOLACEUSNIGER AND MEDIA OPTIMIZATION STUDIES FOR THE MAX
      
Plane elastic problems of different media with cracks on the interface
      
The equilibrium problem for the infinite elastic plane consisting of two different media with many cracks on the interface is discussed.
      
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We have calculated the slowing-down densities of neutrons in two adjacent media of different slowing-down properties according to the age theory. The outer medium is extended to infinity. The inner medium consists of a sphere of radius a, and contains a monoenergetic fast neutron-source in the form of a concentric spherical shell of radius R.

本文根据年龄理论,考虑下列问题:二介质由球面γ_=a分开,球面外的介质一直延伸到无限,球面内的介质中在γ_=R处放有壳形单能快中子源;要求二介质中由此引起的中子慢化密度的空间分布。 求解时应用了拉氏变换的方法。求出了适用於(τ_1)~(1/2)α情形的展开式,这里τ_1是中子在球面内介质中的年龄、物理上出现的实际情形多半满足(τ_1)~(1/2)α的条件,这时展开式收敛很快。 对於二介质是重水和石墨的一个实例;我们算出了热能处中子慢化密度的数值结果(假定快中子源的能量为2兆电子伏),并和用通常二群近似方法求得的结果进行了比较。

In this paper we studied the Maxwell's equations in imhomogeneous and anisotropic media as an operator. It is defined in a bounded region, which can be comprehended as a resonant cavity in micro-wave technique. But these cavities are filled with ferrite, plasma or other gyrotropic medium, all these new media become more and more important in practice. We proved that under some concrete conditions imposed on μ, e and restrictions on the boundary value, the operator of Maxwell's equations becomes a...

In this paper we studied the Maxwell's equations in imhomogeneous and anisotropic media as an operator. It is defined in a bounded region, which can be comprehended as a resonant cavity in micro-wave technique. But these cavities are filled with ferrite, plasma or other gyrotropic medium, all these new media become more and more important in practice. We proved that under some concrete conditions imposed on μ, e and restrictions on the boundary value, the operator of Maxwell's equations becomes a symmetric one. The symmetry and self-adjoint property give much convenience in eigenfunction expansion problems. Besides, we derived the orthogonality of characteristic oscillation and reciprocity theorem in general.

在本文中,把在不均匀各向异性介质中的麦克斯韦方程看作算符,它定义在一个有界区域,可以被理解为微波技术中的谐振腔。但在这腔中充填着铁氧体,等离子体或其他各向异性介质,这些介质在应用中日益重要。文中证明了在某些、边界条件下,算符成为对称。而对称性和自伴性在本征函数展开中带来很多方便;此外我们推导了本征振动的正变性和互易定理。 如果不满足对称性,引入伴谐振腔的概念,所谓伴谐振腔在几何形状上和原来的腔相同,但、和边界条件不一样。它和自伴谐振腔在正交性和互易定理上有某些相似之处。

In this paper, we suggest one method of finding the Green tensor functions in whole space, which are defined in formula (3). Some times it is also called the elementary solution of the corresponding differential equation. All this method is based on Fourier transform. Owing to complexity, we are obliged to make some simplifications. Magneto-gyrotropic media and electric-gyrotropic media are considered separately. For magneto-gyrotropic medium, such as ferrite, μ, is a tensor while s remains scalar....

In this paper, we suggest one method of finding the Green tensor functions in whole space, which are defined in formula (3). Some times it is also called the elementary solution of the corresponding differential equation. All this method is based on Fourier transform. Owing to complexity, we are obliged to make some simplifications. Magneto-gyrotropic media and electric-gyrotropic media are considered separately. For magneto-gyrotropic medium, such as ferrite, μ, is a tensor while s remains scalar. Conversely, for electric-gyrotropic medium, such as plasma, e is tensor and μ remains scalar. Taking advantage of the smallness of matrix μp (defined in (15)) we make an expansion in power series of μp, and carry out the calculations in first order approximation. The concrete results are expressed in formulae (23)、(25)、(28)、(32) and (33). The physical meaning of Γ and the effective region of the asymptotic expansions are discussed.

本文提出一个方法,来推求在(3)式中所定义的、在全空间中的格林张量函数。它有时亦称为对应微分方程的基本解。这个方法是以富氏变换为基础。由于问题的复杂性,我们不得不作某些近似。首先,把各向异性介质分为两类,一类是磁迴旋介质,另一类是电迴旋介质。对于磁迴旋介质,如铁氧体,取为张量而ε为标量。而对电迴旋介质,如等离子体,取为张量而μ为标量。其次,由于矩障非常小(在(15)式中定义),我们可以把解展为的冪级数,并计算出一级近似。具体结果在式(23)、(25)、(28)、(32)和(33)中表示。最后对Г函数的物理意义和它的渐近展开式的有效范围作了讨论。

 
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