- 波包
- 波群
- 射频脉冲；波束
- wave: n. 1.波浪；碎浪； 〔the wave(s)〕 〔诗 ...
- packet: n. 1.包裹；小件行李；(邮件等的)一捆；小批；袋。 ...
- change of wave packet shape: 波包形状变化
- pulse wave packet: 脉冲波包
- radar wave packet: 雷达波包
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wave packet中文什么意思
- 波包
- 波群
- 射频脉冲；波束
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例句与用法
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- Generally , the electron and photons become entangled as the electronic wave packet evolves . if initial photon state is a coherent state and we neglected the transferred photons then the quantized - field calculation is equivalent to the semiclassical calculation
当初始光子态是相干态，且忽略转移的光子数时，电子与量子场系统之间不存在相关性，这种情况下量子场计算与半经典计算等价；当初始光子态是f 。 - According to the analysis of the reason of vibration which comes from reciprocating compressor and the non - stationary characteristic of the signal , in this paper , the method of fault diagnosis in this paper is the model parameter of structure identification and the wave packet decompose
在分析往复式压缩机振动产生的原因以及其振动信号表现出来的非平稳性的基础上,采用了基于结构模态参数识别和小波包分析相结合故障诊断方法。 - The coherent state is represented by a minimum uncertainty wave packet , the quantum correlation in these state is absent , so that it behaves as a quasi - classical state . it is such a property that leads to the results coincide completely with those obtained in semiclassical approximation
正是因为相干态是一个量子力学允许的最小的测不准波包，没有任何量子关联，可以看作是一个准经典态，才导致了完全量子场论和半经典近似下理论结果的完全一致性。 - The use of wave packet to analyze the dynamics of quantum mechanical systems is an increasingly important method to the study of the classical - quantum correspondence . using the quantum gaussian wave packet analysis method , we calculate the autocorrelation function of the rectangular billiard , the peak positions of the autocorrelation function match well with the periods of the classical periodic orbits , which show that the period of the classical orbits can be produced by the time - dependent quantum wave packet method . we also discuss wave packet revivals and fractional revivals in the rectangular billiard , the results show that there are exact revival for all wave packet at each revival time . we find additional cases of exact revivals with short revival times for zero - momentum wave packets initially located at special symmetry point inside the billiard
利用波包分析量子力学体系的动力学行为在研究经典和量子的对应关系方面越来越成为一个非常重要的方法.利用高斯波包分析方法,我们计算了矩形弹子球体系的自关联函数,自关联函数的峰和经典周期轨道的周期符合的很好,这表明经典周期轨道的周期可以通过含时的量子波包方法产生.我们还讨论了矩形弹子球的波包回归和波包的部分回归,计算结果表明在每一个回归时间,波包出现精确的回归.对于动量为零的波包,初始位置在弹子球内部的特殊对称点处,出现一些时间比较短的附加的回归 - In this paper , first , the study of the distribution of electromagnetic field , energy , power , reflection coefficient and transmission coefficient in waveguide with piecewise different dielectric constants are studied . then , the behavior of propagation of am signal and gauss pulse signal through the waveguide are simulated by magic code ， and the plots of electromagnetic field , energy , ponyting vector and their spectrums at different time and different position are obtained . and , the group velocity and energy velocity of wave packet through barrier are calculated
从90年代开始， emig和martin 、 landauer等人研究了分段填充不同介质的波导中的电磁脉冲的传播。在本论文中，作者首先推导出分段填充不同介质的波导中的电磁场分布、能量、传输功率以及反射系数和传输系数的表达式,然后，采用magic程序模拟了这种波导结构中电磁波的传播情况，得到了在不同时刻和不同位置处的电磁场分布图、能量图、坡印廷矢量图以及它们的频谱图,并由模拟结果计算了波包穿越势垒的群速和能量速度。
百科释义
In physics, a wave packet (or wave train) is a short "burst" or "envelope" of localized wave action that travels as a unit. A wave packet can be analyzed into, or can be synthesized from, an infinite set of component sinusoidal waves of different wavenumbers, with phases and amplitudes such that they interfere constructively only over a small region of space, and destructively elsewhere.
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