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- radar wave packet 雷达波包
- If the wave packet has a narrow bandwidth, it will extend over a large region of space and time. 如果包带的带宽很窄，那么它将占据一个很大的空间和时间区域。
- The interference fringes are closely related to the difference and sum of atomic wave packet of the two traps. 而凝聚原子的干涉条纹与两阱中原子波包的动量差与动量和密切相关。
- The transponder detects incoming radar signals and broadcasts an amplified, encoded radio signal in the direction of the detected radar wave. 这个装置将检测接收到的雷达信号，并向收到信号的方向发射大波幅编码雷达信号。
- By analyzing intuitional images presented in this work, the dynamical process of wave packet is investigated. 通过分析文中的直观图像，研究了波包的动力学过程。
- On the base of inducing the physical modeling similarity criterion of radar wave, we designed and made a sand model, and did the experiment of monitoring oil and gas pollution. 在推导雷达波模型实验的相似性准则的基础上，制作了砂质模型，并以原油为污染材料进行了探地雷达监测油气污染的模型实验。
- Then the graph of the changes of group and energy velocity with the length of cutoff region and the main frequency of the wave packet is received. 计算了波包穿越势垒的群速和能量速度,得到群速和能速与截止区长度的关系图,以及群速与激励源的工作频率的关系图。
- We confirm the accuracy and applicability of the ground penetrating radar to be used to estimate mean volumetric water content in soil profile after radar wave velocity analysis. 分析雷达波在土壤中传播速度的变化，明确基于探地雷达的土壤剖面平均含水量测定方法的适用性和准确性。
- We studied the electronic wave packet in a quantized laser field where the electron and the field was treated as a close system. 第五章是本文的另一部分内容，我们将激光场看成一量子化的场，电子与场组成一封闭系统，在量子电动力学的框架内研究了电子波包在量子化场中的时间演化。
- Developing Wave Packets in the North Pacific Storm Track. 北太平洋风暴路径中波包的发展。
- Based on conversion of radar measurement parameters from geodetic coordinates to space coordinates,a method is presented for calculating earth radius corresponding to any point on radar wave. 本文通过雷达测量参数和大地坐标与空间坐标的转换,给出了计算雷达电波射线上任意一点对应地球半径的方法。
- This article points out the imprecision of the eduction of uncertairnty relation from wave packet while the motion of microcosmic particles is determined by quantum statistical theorem. 摘要指出不确定关系从波包导出的不严密性，微观粒子的运动由量子统计规律决定。
- Their method exploits the fact that water vapour changes the speed at which radar waves travel though air. 这句我觉得是:他们的方法揭示了水蒸汽会改变雷达波穿过大气的速度的事实。
- The autocorrelation function of electronic wave packet of hydrogen atom in a strong electric field below the zero-field ionization threshold is investigated in the formalism of semiclassical theory. 运用半经典理论研究在强电场中电离阈值下的氢原子电子波包的自关联函数。
- Like light and radar waves, microwaves usually bounce off objects, making them visible to instruments and creating a shadow that can be detected. 就象光波和雷达波一样，通常微波遇到物体就会反射回来，因此通过设备就能看到物体的成像，或是留下能被探测到的影子。
- When the length of cutoff region is so long or the main frequency is so high to approach the cutoff frequency, the main frequency of wave packet is so high to exceed the cutoff frequency. 电场频谱图显示波包的频谱明显上移,而且当截止区长度足够大时,或者输入波频率趋近于截止区截止频率时,波包的峰值频率甚至超过了截止区的截止频率。
- First, Through the test studies of the interaction of radar waves that are reflected from rebar groups, we get some instructional experiences. 本文首先研究了各种相邻钢筋对雷达波的干扰问题，得出了一些有指导作用的经验。
- For example, the free particle in our previous example will usually have a wavefunction that is a wave packet centered around some mean position x0, neither an eigenstate of position nor of momentum. 例如，在早先例子中的三个粒子将通常具有波包中心附近是某些所谓的位置x0的波函数，既不是位置特征值也不是动量特征值。
- In this context one speaks of pulses as wave packets or wave groups. 在这个意义下，我们把这样的脉冲叫做包波或包群。
- The researchers, some based at Imperial College London, have even created a prototype material capable of cloaking objects against radar waves as proof of their theory. 这些研究人员中的某些是在帝国理工学院工作，他们甚至创造了一种能遮蔽物体使之不反射雷达波的原型材料，作为他们的理论证据。
