波传播

This paper discusses the mechanism of the propagation of elastic surface wave,presented a method that use the tip of atomic force microscopy and beam deflexion method to on line detect the nanometer vibration of the particle in the surface wave.

本文探讨了表面弹性波传播的机制，提出了一种利用原子力显微镜微探针与光束偏转法检测纳米振动的新方法，并利用这种方法对表面波质点的纳米振动进行了实时检测。

In Chapter 2, we firstly examine the propagation direction of travelling target waves induced by the localized inhomogeneity.

在第2章中，我们首先研究振荡系统中缺陷对靶波传播方向的选择。

Is the wave due to changes in the density of the medium, so that the oscillations of the particles are in the direction of the propagation?

光波是由于介质密度的变化，而使得粒子向波传播的方向作振动的吗？

In this paper, a least-square collocation formulation for solving Helmholtz equation with Dirichlet and Neumann boundary conditions was established.

对于Helmholtz方程问题，其微分方程和边界条件可表示为法应用于Helmholtz方程问题的研究，建立了 Helmholtz方程问题的最小二乘配点格式，分别研究了Hdmholtz方程的波传播问题和边界层问题。

Assessment of arterial distensibility by automatic pulse wave velocity measurement.

左右臂踝脉搏波传播速度绝对差值诊断外周动脉疾病的价值。

The rules of the propagating behavior of stress wave and the phenomena of stress concentration have been analysed. The crack rules of the firing pin have been studied and corresponding improvement methods have been proposed.

分析了击针受撞击时应力波传播的规律和应力集中现象，揭示了击针断裂的规律并从理论上和实践上给出了改进方法。

Phase velocity and group velocity are important characteristics of elastic wave propagation.

相速度、群速度是弹性波传播的重要特征。

This pattern may be applied to problems such as heat flow and wave propagation.

该模式适用于处理热流和波传播问题。

The calculation result shows the velocity of heat and mass transfer is finite and has the characteristics of wave. The compare of the results of hyperbolic equation and those of parabolic equations shows there is a delay between both the thermal and the mass of the former and those of latter.

计算结果表明：在考虑热量传递过程的松弛效应以后，发现热量传递速度是有限的且具有明显的波传播机制，计算结果和由抛物型方程进行计算得到的结果进行比较发现不管是热量传递还是质量传递在时间上都有一个延迟。

By solving the frequency equation,the relationship between initial stress and phase velocity is obtained.

通过求解考虑初应力时的耦合波动方程，得到了管道壁中应力波传播时相速度和初应力的关系，并进行了实例计算。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。