The observed velocity of the vehicle start wave propagation was obtained from the survey data directly and the corresponding derived propagation characteristics of the vehicle start wave. 按照起动波传播特性,由实际调查数据计算了波速观测值。
The model was calibrated by the survey data in Changchun city and the velocity of the vehicle start wave propagation was calculated by the model. 利用长春市实际调查数据标定了模型,并得到了波速计算值。
It is concluded that the movement velocity of bed load slower than the propagation velocity of flood wave is the root cause for happening of long distance streamwise erosion. 指出底沙运动速度比洪水波传播慢是造成河道长距离冲刷的根本原因。
Phenomenon of the change in velocity of propagation of monochromatic radiations in a medium as a function of the frequency of these radiations. 在介质中传播的单色光改变其传输速度的现象,并由该辐射的频率所决定的。
In recent years, researches about the controllable group velocity of light propagation had made many progresses. 最近几年中,慢光和超光速的研究取得了很多进展。
There is no finite velocity of propagation, and we speak of a standing wave. According to certain research, the spread velocity of sound waves has nothing to do with the speed of the ripples. 波没有有限的传播速度,因而我们称之为驻波。研究表明,声波在同一介质中的传播速度和波源的速度无关。
Dobutamine caused increases in control subjects and decreases in patients in peak early filling velocity ( E) and rate of flow propagation ( RFP); 左室舒张早期峰值血流速度(E)和左室舒张早期血流传播速度(RFP)在对照组表现为增加,在冠心病组为减低;
Using this solution, we have analysed effect to the dynamic stress intensity factor by the constant of media and the velocity of crack propagation. 利用这个解,我们分析了不同材料常数及裂纹扩展速度对应力场分布及动应力强度因子的影响,得到具有实际意义的结论。
The velocity of seismic wave propagation along the pipelines, soil-pipe interaction, and the correlation between the damage of pipe units are discussed. 探讨了地震波沿管道的传播速度,管-土相互作用,管单元的失效相关性等问题。
On Velocity of Conveying Electromagnetic Signal and Propagation Modes of Electromagnetic Waves In this paper, first, the velocity of wave in free space and waveguide have been studied. 论群速相速概念与电磁波传播模式在本论文中,先研究了自由空间和波导中的波速,包括相速、群速、信号速度和能量传播速度。
The effects of the motion of medium on the frequency, velocity and direction of propagation of electromagnetic waves, the laws of reflection and refraction on the boundary surface of a moving medium are discussed. 论述了运动介质对电磁波频率、速度和传播方向的影响及在运动介质表面的反射定律和折射定律。
Monitoring analysis for the velocity of crack propagation 裂纹扩展速度监测分析
If the negative velocity were regarded as that of some energy, superluminal propagation would occur at the beginning instant of the negative group velocity propagation so that it is an action at distance which would violate causality and energy ( or energy flow) conservation laws. 如果把负群速度看成是某种能量的传播,那么超光速出现在负群速度开始时的瞬间,因而它是超距作用,违反能量守恒或动量守恒。
The shear ( S)-wave velocity of near-surface materials and its effect on seismic-wave propagation are of fundamental interest in many engineering, environmental, and groundwater studies. 横波速度由于更能直接反映岩石的物理性质,从而在许多工程、环境和地下水勘查中有重要作用。
There is difference between the simulation calculations and the results given by WKB approximation on energy trace and group velocity. This indicates that the nonlinearity affects the characteristics of gravity waves. The inhomogeneous temperature lowers group velocity and changes the path of energy propagation. 波包非线性传播的路径、能量传输速度不同于WKB近似下的结果,非线性效应导致了重力波的传播特性的改变;
In the experiment the velocity of pressure wave propagation was smaller than that of sound in the free flied, and it was found that the measurement results of the two methods were similar and the measurements were precise better. 实验结果证明,测得的管路系统的压力波传递速度总是略小于自由场中的声速,且两种方法的测量结果相近、测量精度较高。
In this experiment, the velocity of pressure wave propagation is measured by frequency analysis technique and the measured result is reliable. 在实验中利用谱分析技术对压力波传递速度进行了测量,测量结果可信;
The test indicates that the velocity of crack propagation is general 400~ 600 m/ s. 实验发现,裂纹扩展速度一般为400~600m/s;
The experimental results showed that the obstacle objects have great influence upon the propagation velocity of flame, the propagation velocity of flame quickly rises when obstacle objects exist or the quantity and characteristic size of the obstacle objects increase. 有障碍物存在时,火焰传播速度将迅速提高,且随着障碍物的数量和特征尺寸的增大,火焰的传播速度也将迅速提高。
Isoseismals not only represent seismic intensity distributions but also represent earthquake source size, faulting mode, and rupture velocity of fault propagation. 地震的等震线不仅反映了地震的大小,而且也反映了地震断层过程的类型和破裂速度。
Measurement method for velocity of pressure wave propagation 压力波传递速度的测量方法
Straight ray method with varying velocity for spatial correction RAY METHOD OF SH WAVE PROPAGATION IN AN ANISOTROPIC MEDIUM WITH A CIRCULAR CAVITY 变速直射线空校法各向异性介质中圆柱体对SH波散射的射线理论
The factors influencing the velocity of heat wave propagation in reactor bed. 影响热波在填充床内移动速度的因素;
By analyzing the local distribution of velocity around the crack tip, the eddy-like distribution of velocity and the stick-slip mode of crack propagation are also discussed. 通过对局部的速度场分析,观察到在裂纹尖端的漩涡状速度分布和负速度分布,并探讨了裂纹传播的Stick-Slip现象。
The traditional Fourier heat conduction law leads to infinite velocity of heat propagation, that is, if a sudden change of temperature is made at some point on the body, it will be felt instantly everywhere. 传统的傅立叶导热定律隐含了热传播速度无限大的假设,即如果导热介质内某点处突然施加热扰动,介质其他部分会同时感受到温度的变化。
Media language has characteristics of carrier diversification, inadequate specification, quick velocity of propagation, different influence etc.. 它具有载体多样化、规范性不够、传播速度快、影响力不同等特点。
It has became the preferred tool to transfer information because the features of autonomy, Simple and velocity of propagation. 微博客因其自主、简约、快速的特点成为了网友传递信息的首选工具。
The impedance in branches of traditional addressing and programming approaches makes the smaller programming current flowing through the antifuse and higher programmed antifuse resistance, limits the driving ability of connection and velocity of propagation. 传统的寻址编程方式支路上存在阻抗,编程时流过反熔丝的电流较小,编程后反熔丝电阻较大,制约了连线的驱动能力和传播速度。
After analyzing the effects of the imprecise of wave velocity on the target locating. A method is proposed to estimate the velocity of the electromagnetic wave propagation under ground. 分析了在前视探地雷达中波速估计不精确对目标定位的影响,提出了一种前视探地雷达波速估计方法。
Phase velocity and group velocity are two of the important parameter for studying seismic wave propagation rule. 相速度和群速度是研究地震波传播规律的两个重要参数。