查询词典 wave velocity

It is also presented that shear modulus of unsaturated cohesive soils varies with water content or saturation degree evidentially, so notable change of share wave velocity is aroused.

分析中还指出非饱和粘性土的剪切模量随含水量的变化较大，从而会使剪切波速度发生较大的改变。

The faultiness of existing models was discussed. A new model for elastic wave velocity of unconsolidated sandstone was developed on the basis of these models.

首先讨论了现有各类模型存在的不足，并在这些模型的基础上，提出了新的疏松砂岩弹性波速分析模型。

Based analysis above, we chose the spatial resolution of 1°×1°in the horizontal direction and 5~30 km in depth. Using the pseudobending method to calculate the ray traveling path and residual of travel time; LSQR method to inverse, we got the final 3-D P wave velocity structure in this area.

根据上述分析，以水平方向1°×1°，垂直方向以5 km、15 km、30 km为间隔划分网格，并建立初始速度模型，采用伪弯曲射线追踪方法计算走时和射线路径，通过基于LSQR算法的反演重建了研究区域40 km以下、480 km以上的三维P波速度结构。

All of the variational law of density, longitudinal wave velocity and tensile strength of gritstone after high temperature are studied.

对40块粗砂岩试件高温后的密度、纵波波速和抗拉强度变化规律进行了试验研究。

The results show that the density of gritstone is decreased gradually as the temperature increasing; so that it can be ignored; the longitudinal wave velocity is linearly decreased when the temperature increasing, and decrease rate of it follows the law of conic; R is one temperature point, which makes the law of tensile strength of gritstone after high temperature follows the law of parabola; and the maximal tensile strength appears when the operative temperature is R. After the temperature is higher than 700 ℃, tensile strength is small and change range is small when the temperature is increased.

结果表明，高温后粗砂岩的密度随试验温度的升高减小幅度很小，几乎可忽略不记；高温后试件中纵波波速的传播随温度升高基本呈线性降低，而减小率呈二次曲线规律变化；存在一个温度点R，使高温后试件的抗拉强度呈开口向下抛物线关系变化，且在R温度作用后试件抗拉强度达到最大；当试验温度大于700 ℃后，试件的抗拉强度变得很小，且当温度升高时变化幅度也很小。

The results are valid only for load with speed lower than Rayleigh wave velocity in ground.

以单个轮轴移动荷载为例，分析地基土单元的应力状态变化、主应力轴旋转以及荷载速度的影响。

In this thesis, the AlN thin films were deposited on SiO2/Si and GaN/Sapphire substrates respectively for layered structure SAW devices by Helicon sputtering system. Laser ultrasound system was used to measure the acoustic wave velocity of AlN/SiO2/Si layered structure. Frequency response and insertion loss were measured by an HP8510C vector network analyzer to analysis insertion loss, sidelobe and quality factor. The results showed the possibility of incorporating thin films SAW devices with other semiconductor devices.

本研究使用回旋溅镀系统分别在SiO2/Si、GaN/Sapphire两种基板上沉积AlN并制作层状表面声波元件，并利用雷射超音波系统量测AlN/SiO2/Si结构之表面波速及机电耦合系数，再利用网路分析仪量测其频率响应，分析其插入耗损、 sidelobe、品质因子Q，以比较不同基材所制作之层状表面声波元件之特性，此研究成果初步验证AlN层状表面声波元件与半导体元件整合之可行性。

An integral representation for displacements of a circular footing vibrating vertically with a linear wave velocity on a elastic half-space whose shear modulus changes non-linearly with depth was presented by analysis, dynamic triaxial test on dynamic modulus and damping ratio of soils was also carried out.

本文通过计算分析得到了变剪切模量弹性半空间上基础竖向振动的积分变换解，并且进行了场地土动力特性试验研究。

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。

Relation between longitudinal wave velocity and uniaxial tensile strength is quadratic curve after high temperature.

高温后纵波波速与抗拉强度关系复合2次曲线关系。

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。