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- wave packet theory 波包理论
- 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。
- 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。
- 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。
- Secondly, the wavelet packet theory and its application are discussed.The multi-index fault diagnosis model of diesel valve is established based on Mahalanobis distance. 然后，研究了小波包理论在柴油机气门故障诊断中的应用，建立了基于马氏距离法的柴油机气门故障多指标诊断模型，在实例应用中取得了良好的效果。
- 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 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。
- The wavelet packet theory has the good hour-frequency characteristic,it can be availably used for the noise suppression processing of the digital signal and withdrawing the signal characteristic. 小波包分析具有优良的时频特性,可以有效地用于数字信号的消噪处理和对信号进行特征提取。
- 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。
- 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。
- Schrodinger Equation, Bound States, Hydrogen Atoms, Wave Packets and Uncertainty Relations, WKB Approximation, Principle of quantum mechanis, Perturbation Theory, Variational method, spin and Angular Momentum, Scattering Theory. 薛丁格方程、缚态、原子、包及测不准原理、kb近似、子力学的原理、扰论、方法、旋与角动量、射论。
- 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。
- 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。
- For both types, the phenomenon of self-trapping occurs.A part of the wave packet stays highly localized near the initial sites and turns into solitons while another part is diffusive with time. 对于这两类模型，我们发现在非线性的作用下均出现了自限现象，一部分波包在初始位置附近高度局域化，形成孤子，另一部分则随着时间向外扩散。
- I have a coupon for ten pence off a packet of soap. 我有一张优惠券，买一盒肥皂可以便宜十便士。
- The actual wave is formed by wave packets or groups confined between the amplitude curves ?? 实际的波?砭褪怯上拗圃谡穹?曲线中的一些波包或波群组成的。
- Do you agree to the wave theory of light? 你同意光的波动理论吗？
- Put the packet up on the top shelf. 把这个包放到架子顶格上去。
