查询词典 wave theory

Based on the small steepness parameter, three-layer incompressible, inviscid and irrotational fluid system of arbitrary depth is discussed by using the perturbation method, and a unified theory of nonlinear interfacial-internal wave propagation and the approximate nonlinear evolution equations for interfacial-internal elevations are given on the basis of the rigid upper boundary and the flat impermeable bottom.

基于波陡很小的假设下，利用摄动法，讨论了任意深度的二维不可压缩、无黏性、无旋的三层流体系统，在刚性上边界、平底不可渗透条件下，给出了界面内波传播的统一理论以及描述界面内波波剖面的近似非线性演化方程，最后还讨论了几种特殊情形下的近似非线性演化方程。

Based on the theory proposed by Alkhalifah, that is the reflection wave is determined by normal moveout velocity V of short-spread and anisotropic parameter η under the condition of long-spread data of vertical and lateral isotropic media and non-hyperbolic curve, a method for long-spread data velocity analysis is studied. A 2 step scanning method is used for the hyperbolic and dual parameter scanning of long-spread data.

根据Alkhalifah提出的垂直横向各向同性介质长排列情况下反射波走时由短排列的正常时差速度v和各向异性参数η确定，并具有非双曲线形式的理论，研究了针对长排列数据的速度分析方法，通过2步扫描方法实现了长排列数据的非双曲线双参数扫描。

It also covers two-fluid hydrodynamic plasma models, wave propagation in a magnetic field, kinetic theory, Vlasov plasma model, electron plasma waves and Landau damping, ion-acoustic waves, and streaming instabilities.

它也涵盖双流体的流体动力学的等离子体模型、磁场内的波传播现象、动力理论、Vlasov等离子体模型、等离子体波、蓝道阻尼、离子声波和串流不稳定性。

The theory of sine wave klystron and the method to realize it were specified with corresponding equations.

阐述了正弦波速调管聚束理论及具体实现方法，给出了相应的计算公式。

Combining with the theory of the conservation law of mass,momentum,energy and gas explosion dynamics,the attenuation law of shock wave in excavation roadway was deduced during gas explosion.

运用质量守恒、动量守恒和能量守恒定律及爆炸气体动力学理论等，对掘进巷道瓦斯爆炸冲击波的衰减规律进行研究。

From the theory of relativity,this paper useing Lorenty transformation of wave vector ,law of reflection and law of refraction in a surface of moving mediun is discussed.

从狭义相对论的波矢量间的洛仑兹变换出发，推导出光波在运动媒质表面的反射定律和折射定

In theory, the one-dimensional nonlinear longitudinal wave equations are deduced and the approximate analytical solutions are received.

理论上利用摄动法推导了一维非线性纵波方程的近似解析解。

By applying fractal theory, the relation between and longitudinal wave velocity and deformation modulus are carefully studied.

采用分形理论，研究了分维值与岩体变形模量和纵波速之间的关系，结果表明：岩体的变形模量并非只受岩体内结构面分布的影响，还受其岩块的变形性质的控制。

One of the oldest and most commonly used formulations is the transformation theory invented by Cambridge theoretical physicist Paul Dirac FRS, which unifies and generalizes the two earliest formulations of quantum mechanics, matrix mechanics and wave mechanics.

最古老之一和最普通使用公式是变换论，由剑桥理论物理学家保罗·迪拉克皇家学会会员发明，它统一和概括了最早的两个量子力学公式，矩阵力学和波动力学

The writer focusrs on investigating and studying how the research is taken scientific paths and the shining course in which he founded his theory of Matter Wave.

着重考察和探索L。德布罗意怎样走上科学的道路，以及他创立的物质波理论的光辉历程。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。