It starts with zero and grows to a maximum slightly behind the wave front.
它从零值开始，并在稍后于波阵面处增长到最大值。
Successive positions of the wave front are then given by the envelopes of the secondary waves.
因此波前的相继位置即为次波的包络面。
Direction(D):the horizontal vector perpendicular to the wave front along which the crext travels.
方向（D）：运动方向，垂直于波阵面的水平方向；
Moreover, it is difficult to implement a description of the wave front and the transformation of three-dimensional system of coordinates.
其次有关波前面的描述和三维坐标系之间的变换也是个难点。
A practical calculation method is given. With the parameters of the impulse circuit the wave front and tail and the voltage efficiency can be calculated.
文中给出实用计算法，以便根据冲击回路参数估算操作波的波头、波尾和电压效率。
The results show that, for a Gaus-sion laser beam, the shock front is a curved surface, the pressures at different radial positions on the wave front are different.
计算表明，对于高斯激光束，冲击波阵面为一曲面，波阵面上不同径向位置的压强是不同的。
The influence of dynamic thermal effect induced by optical pumping of YAG crystal rod in a pulsed solid laser on the wave front of the output laser beam is studied in this paper.
本文研究了脉冲固体激光器的YAG激光棒光泵浦动态热效应对激光波面的影响。
The algorithm calculated the wave front slope by a reusing core module manner and complemented the wave front reconstruction with the decomposition of matrix-vector multiplication.
该算法基于重复利用核心模块的方式完成波前斜率计算，利用矩阵与向量相乘的可分解性完成波前复原计算。
The formulas of mode conversion are derived and effects of optical beam power, initial beam width radius and inverse of the radius of curvature of the wave front on the mode conversion are analysed.
导出模式变换公式，分析了光束功率、光束初始的束宽半径和波前曲率半径的倒数对模式变换的影响。
The adaptive optical system is composed of the wavefront sensor, the wave front constructor and the wavefront corrector, which can correct the wavefront aberration distorted by atmospheric turbulence.
自适应光学系统由波前传感器、波前重构器和波前校正器组成，能够实时动态校正大气湍流等造成的波前畸变。
Then, with some approximation to the wave front section, the forward modeling can be achieved through the ray tracing method based on the minimum traveling time and the shortest traveling trace assum.
然后，对波阵面作一近似，在此基础上，用最小走时最短路径射线追踪法完成正演。
The scientists found that the precursor wave front of a single photon always travels at c, like the signal velocity of large groups of photons.
科学家发现，单个光子的前驱波头一般以光速c传播，就像由大量光子携带的信号的传播速度一样。
The precedence effect (or "law of first wave front") is our brain's ability to determine the location of sounds amidst conflicting signals based on the direction of the first waves of sound.
优先权效果(或者“第一声波靠前定律”)是我们的大脑基于第一声波位置在相互冲突的各种信号中判定声音位置的能力。
I practiced my speech in front of a video monitor, did a walk-through of how it would be staged, received instruction on where to stand, where to wave, and how to best use the microphones.
我在视频监视器前面练习我的演讲，做了一个初排，分析该怎么样开场，被指导该站在哪里，该在哪里挥手和最佳的使用话筒的方法。
My father is seated in the front pew and I wave to him because I'm not sure what he would think if I hugged him.
我爸坐在前排椅子上，我只是冲他挥挥手，因为我不能确定假如我拥抱他，他会怎么想。
But if you are on the top of the wave as it begins to break, you can stay right on the front of it and ride it all the way to shore.
但是如果当波浪开始破浪的时候你是在上面，你可以正好呆在它的前面，骑它回到海岸。
An X band low cost, simple and compact continuous wave Doppler radar is presented. The whole front end is designed using hybrid microwave integrated circuits (mic).
本文介绍了一种X波段低成本、结构简单、小型化的连续波多普勒雷达，雷达前端采用微波混合集成电路(mic)。
Fringes are formed when the optical difference (OPD) between a reference wave front and a test wave front based on the interference of light is an integral multiple of the illuminating wavelength.
测试中，当测试波前相对于参考波前的光程差是照明波长的整数倍时形成干涉条纹，由此而形成的二维图就是干涉图像。
Just as the wave is breaking, take one or two strong pulls, hold your breath, get in a good streamline, and kick like crazy in order to stay on the front of the wave.
正当波浪破浪的时候，猛划两下，屏住呼吸，保持一个好的流线型，玩命打腿，好把自己保持在波浪的前面。
A series of sufficient conditions to guarantee the existence of front wave solutions are obtained.
在各种条件下，得到一系列保证波前解存在的充分条件。
The wave state in front of vertical walls was studied by model tests of irregular waves in shallow water.
通过浅水不规则波模型试验，研究了直立墙前的波浪型态。
After analysing the tall building structures summarized, two wave front solution programs calculating that are designed.
概述了高层结构的分析方法，给出了高层结构计算的两种波前法计算过程。
This dissertation is mainly on the theory and design of millimeter-wave integrated receiver front-end.
本论文的工作主要是对毫米波集成接收前端的理论和设计进行了研究。
The sediments of delta front around wave base plane are eroded by wave action and took along to redeposit below wave base plane, during which turbidite is formed.
波浪作用可以侵蚀浪基面附近的三角洲前缘砂体，并在回流作用下携带至最大浪基面之下再沉积，沉积过程中形成小型浊积体。
This morning, he is going to walk down the front steps, wave his hand and start on his great adventure that will probably include wars and tragedy and sorrow.
可是现在-一切都将发生变化。今天早晨，他走下屋前的台阶，挥挥手，即将踏上他伟大的冒险征途，途中也许会有战争、悲剧和伤痛。
So if you're standing in front of the ultrasonic sound wave, you can hear the sound.
所以如果你站在超音速声波的前面，你能听到声音。
So if you're standing in front of the ultrasonic sound wave, you can hear the sound.
所以如果你站在超音速声波的前面，你能听到声音。
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