守恒

We argue that the wave-particle duality of microscopic particles perhaps results from the intrinsic energy conservation and conversion inside the particles. We point out that there\\\\\\\s a critical flaw both in electromagnetic field theory and Coulomb\\\\\\\s inverse square law.

在详细分析了宏观质点简谐运动的基础上，仍以能量守恒和转换定律为出发点，阐明微观粒子的波动过程必须时刻满足能量守恒定律，指出传统的电磁场理论和库仑定律都存在瑕疵。

Basing on the law of conservation and conversion of energy, we can obtain analytically Newton\\\\\\\s three laws of motion and the law of conservation of momentum.

文章深入讨论了能量与力之间的内在联系，根据能量守恒和转换定律，直接获得牛顿三大运动定律和动量守恒定律。

P12 The find of Compton effect and the coherence of theoretical analysy and experimental result not only convincingly veified that the photon theory was right,but also veified that the conservation of energy and the law of conservation particles would similarly observe the law of conservation of energy and the law of conservation of momentum with vigour when they act on each other

康普顿效应的发现，以及理论分析和实验结果的一致，不仅有力地证实了光子学说的正确性，同时也证实了在微观粒子的相互作用过程中，同样严格地遵守能量守恒定律和动量守恒定律。

Lumped parameter method was adopted to build the model on account of the mass and energy conservation of each component.

仿真模型基于部件的质量守恒和能量守恒，采用了集总参数方法。

Using the basic dynamic equation of rotary non-inertial system, the basic law of object s movement in the reference system of rotating about fixed axis , and the conditions of momentum conservation and conservation of momentum moment of objects are educed.

利用旋转非惯性系中的基本动力学方程，导出在定轴旋转参照系中物体运动的基本规律，以及物体动量守恒和动量矩守恒的条件。

Based on this, a new WENO difference scheme which based on Dispersion-Relation-Preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics problems has been implemented and compared in order to test capability of wave capturing; In addition, WENO schemes generally do not converge at high order in the presence of contact discontinuity of Euler equations, so a conservative front tracking technique coupling WENO schemes and Level Set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy.

本文研究了高阶精度加权基本无振荡格式及其在双曲守恒律方程中的应用，在此基础上作了两个方面的工作：一是针对高频声波问题构造出一种基于保色散关系的WENO有限差分格式，并对计算气动声学问题的代表性算例进行了大量数值实验，比较了该格式捕捉波数的能力；另外，针对高阶WENO格式在处理Euler方程的接触间断时精度有所降低的问题，研究了利用界面追踪技术Level Set方法和高阶激波捕捉WENO格式相结合的一种守恒追踪方法，并且给出有代表性的密度滑移面问题的算例，得到一致高阶精度的数值模拟结果。

The computational forms of conservative and nonconservative full—potential equations in an arbitrary non—orthogonal coordinate system have been developed by using simple and convenient mathematical derivation.

一、用简便易懂的数学推导，给出了一般曲线坐标系上守恒及非守恒型全位势方程的计算形式，对推导中引进的符号从物理上作了解释。

Thirdly, according to the development of the frozen soil, the coupling model of single freezing pipe of axial symmetry of temperature field, stress field and moisture migration is put forward firstly. Then, by means of the progressing principle of potential field, the coupling model of temperature field, stress field and moisture migration which is under the condition of the multi-freezing pipes is extended. At last, the energy balance equation, stress balance equation, quality balance equation, geometric equation, physical equation, initial and boundary conditions etc are adopted to give the analytic solution to the problem of plane axial symmetry of single freezing pipe.

第三，在对室内试验和现场实测结果研究的基础上，分析了土体冻结过程中温度场、应力场、水分场耦合原理，并按照冻土体形成发展过程，首先建立了单一冷源冻结轴对称温度、应力、水分场耦合模型；接着利用势场的迭加原理，将单一冷源情况的三场耦合问题推广到多冷源情况的三场耦合；最后根据能量守恒平衡方程、应力平衡方程、质量守恒平衡方程、几何方程、物理方程、初始及边界条件，解出了单一冷源平面轴对称问题的解析解。

In this work, however, we follow an energy perfect conserving semi-implicit scheme of a European Centre for Medium-Range Weather Forecasts type sigma-coordinate primitive equation which has recently successfully formulated.

本研究在成功地构造实现其全能量完全守恒的半隐式方案基础上，进行了此守恒方案与欧洲中期天气预报中心的σ--坐标原始方程全球谱模式半隐式方案间的实际资料对比实验。

The main contents include the ray phenomenon and its generation conditions; the deduction and physical illumination of wave action conservation equation and wave number conservation equation; ray theory for sinusoidal waves; Fermat's principle; the variation of amplitude in the case of straight and parallel depth contours and circular depth contours; the amplitude near the caustics; wave trapping; deduction of mild-slope equation and the relevant numerical solution methods.

讲授折射现象及其发生的条件；波作用守恒方程和波数守恒方程的推导及物理解释；稳恒正弦波的控制方程及射线方程；费马原理；利用射线方程研究等深线是平行直线和圆周线时波振幅的变化，特别是焦散线附近波高的变化以及由此而产生的波的俘获；缓坡方程的推导及有关的数值求解方法。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。