查询词典 wave equation

Thirdly, after analyzing and discussing laser supported combustion wave and laser supported detonation wave , LSCW and LSDW models are built according to the hydrodynamical equations and the plasma state equation, and some formulae of the pressure behind the shock wave, the propagating speed are given, and the differences between the LSDW and LSCW and their judging methods are pointed out emphatically.

其三，在分析和讨论激光支持燃烧波和爆轰波的基础上，由流体动力学方程组和等离子体状态方程建立了LSCW和LSDW模型，得到了波后压力、传播速度等参量公式，并着重指出了LSDW和LSCW之间的区别和判别方法。

Through solving the nondivergent inviscid linear vorticity equation in cylindrical coordination of barotropic atmosphere with WKBJ method, the authors point out that one kind of wave, named vortex Rossby wave, which is similar to planetary wave, exists in hurricane, its formation is due to the gradient of vertical vorticity component of basic state.

作者中文名：钟科；康建伟；余清平摘要：文中从柱坐标系下的正压无辐散涡度方程出发，用WKBJ方法求解方程，发现在飓风中存在类似于行星罗斯贝波的涡旋罗斯贝波，这种波的形成主要是由于飓风中基态涡度垂直分量的径向梯度所决定。

By using the theory of bifurcations of dynamical systems to the generalization form of the modified KdV equation, the existence of solitary wave, kink and anti-kink wave solutions and uncountably infinite many smooth and non-smooth periodic wave solutions is obtained.

本利用动力系统的分支理论来研究一类广义MKdV方程的行波解，得出了孤立波、扭子、反扭子和不可数无穷多个光滑和非光滑周期解的存在性。

The parabolic equation can treat large angle incident waves and includes the wave energy loss with Bretchneider—Reid formula which has been verified by lots of indoor and field data, Its numerical model can simulate wave shoaling、refraction、small angle diffraction and bottom friction, and can be aplied to study the wave filed from open sea to shore area.

在抛物型缓坡方程波浪数学模型的建立过程中，采用适用于较大角度传播的基本方程，同时这一模型引入建立在较多实验和实测资料基础上的Bretchnei-der—Reid公式，较好地考虑了底摩损耗问题。该模型可同时考虑波浪的浅水变形、折射和小角度绕射，适用于大范围波浪场的推算。

Then we find out the exact bounded wave solutions for WBK equation in chapter four. According to the theory of dynamical system, we investigate the explicit exact traveling wave solutions of nonlinear wave equations by using the characters of the closed trajectory connecting equilibrium points and the relations between obits and traveling waves.

在对系统进行定性分析、了解了系统所有可能解的大致形态的基础上，论文第四章给出了WBK方程的精确有界解，应用动力系统理论，利用连接平衡点的闭轨线的特点结合轨线与行波之间的对应关系来研究非线性波方程行波解的有界性及精确的显式表达式。

The numerical model of non-linear wave in harbor, including the non-coupled and non-linear wave numerical model, the numerical model combined Boussinesq equations with Laplace equation and the coupled numerical model combined Boussinesq equations with Euler's equations, are studied.The studies on non-coupled and non-linear wave numerical model are following.

本文分别以Boussinesq方程，二维和三维Laplace方程，欧拉方程和牛顿第二定律作为基本控制方程，分别从非耦合非线性波浪计算模型(指单独采用一个计算模型：本文指Boussinesq方程，或边界元法解Laplace方程，或有限元法解Laplace方程)、Boussinesq方程与Laplace方程耦合计算模型、Boussinesq方程与欧拉方程耦合计算模型三个方面对港口非线性波浪计算模型展开了研究。

Secondly, the direct demodulation detection system of 8mm wave band 32-channel on the background of millimeter-wave focal plane imaging is built, according to millimeter-wave passive detection theory, at the same time, the principle experiment is carried out, and the basic theory of millimeter-wave detection are confirmed.

其次，根据被动毫米波探测理论搭建了以毫米波焦平面成像为应用背景的8mm波段32通道直接检波式探测系统，并进行了原理性实验，验证了被动毫米波探测的基本理论。

Wave protection effects of circular arc wave walls and paraboilc wave walls are compared and analyzed,showing that curving wave walls are very effective in preventing overtopping .

文章中就圆弧型及抛物型曲面挡浪墙的防浪效果进行了对比，说明曲线防浪墙对阻止越浪是十分有效的。

The transverse wave disturbance along tangential base flow of circular vortex is discussed By using numerical method we study this instability of baroclinic flow which is mesoscale inertia wave instability on the cylindrical coordinate The influence of stratification stability N 2 , Coriolis parameter f 0 , the vertical shear of tangential wind z of the ambinent atmosphere and the latent heat on the growth rate of instability is studied From the above analysis and calculation, we can learn that there are Eady mode and mesoscale mode of transverse wave instability in circular vortex as well Furthermore we also learn that distribution character of mesoscale mode disturbance field of transverse wave instability, anomalistic "cats eye" structure of lower level and the character of the slowly spreading disturbance converges at low level and the quickly spreading disturbance converges at high level

作者中文名：李红金；陆汉城；宋晓亮；李鲲摘要：讨论涡旋大气中，存在沿切向基流传播的横波型扰动，并采用数值方法讨论了柱坐标系下圆形涡旋系统斜压气流中这类扰动的不稳定，这是一类中尺度的重力惯性波的不稳定。研究了涡旋环境大气的层结稳定度参数N2、切向风垂直切变Vz、凝结潜热、涡旋特性及科里奥利参数f0对不稳定增长率的影响。圆形涡旋中同样存在横波不稳定的Eady模态和中尺度模态，得到了中尺度模态的扰动场分布特征：流场的不规则"猫眼"结构及慢速传播的扰动均集中在低层，而快速传播的扰动均集中在高层的扰动特征。

Aggregation ; circumfusion ; economic entity ; social entity ; material entity ; industrial wave ; aggregating wave phase ; near wa ve phase ; far wave phase ; regenarative wave phase

聚集；扩散；经济实体；社会实体；物质实体；产业波；聚波阶段；近波阶段；远波阶段；再生波阶段

I was just taking her hand, to help her out of a car, and I knew it.

我只是握着她的手，扶她下车，但我知道这一切。

China and South Korea have excoriated Japan over its approval of new school books which they say whitewash the atrocities committed during Japanese occupation, and anti-Japanese protests have been held in Chinese cities. The lingering bitterness over Japan's past imperialism still threatens to mar relations between the big East Asian powers

中国和韩国强烈谴责日本通过新的中学历史教科书，他们认为这一教科书掩盖了日本在其占领期间所犯下的残酷暴行，反日抗议活动在中国数座城市发生，历史上日本帝国主义制造的痛楚无法被忘却，这有可能破坏东亚强国间的关系。