Time reversal t is not unitary.
时间反演t不是幺正的。
Time reversal tis not unitary.
时间反演t不是幺正的。
Time reversal invariance is a very useful symmetry in subatomic physics.
时间反演不变性在亚原子物理中仍然是一种很有用的对称性。
Repeated time reversal iterations can obviously enhance the focus signal energy.
通过反复迭代进行时反操作，可以明显提高聚焦信号能量；
The principle of the time reversal processing and its spatial and time focusing are studied.
利用传输矩阵分析了迭代时反处理的收敛性和时反算子分解方法的原理。
The principle of time reversal and the process of active detection using this technology were analyzed.
分析了时反法的原理，并进一步分析了时反法用于主动探测的过程。
The iterative time reversal processing and the decomposition time reversal operator method are studied.
研究了迭代时反处理和时反算子分解方法。
Time reversal is a unique self-focusing technique for spatial and temporal focusing of sound in unknown environments.
【中英文摘要】时反法是一种新颖的自适应聚焦技术，它可以使声信号在未知环境下实现时空聚焦。
We have shown nonexistence of symmetry with respect to time reversal of the time correlation function of the steady state.
证明了定态时间相关函数不存在时间反演对称性。
Time reversal array focusing and focused beamforming can achieve the same effect, although they are different in the method.
理想信道中阵的时反聚焦与近场的聚焦波束形成是异曲同工的。
The finite element method is used to investigate the effect of a time reversal method on the guided wave inspection in pipes.
为克服现有导波检测技术对管道小缺陷检测的不足，给出了一种基于时间反转理论的管道缺陷超声导波无损检测方法。
The relation between spatiotemporal inverse filter and time reversal is analyzed, and the iterative time reversal is presented.
在分析空—时逆滤波和时反处理关系的基础上，提出了一种迭代时反的方法。
By designing TRP system, we built a real-time experimental system, and validated the feasibility of a physical time reversal system.
通过设计时间反转处理实验，构建实时处理的实验系统，进一步验证了时间反转处理物理实现的可行性。
Based on the focalization ability to the wave origin of time reversal theory, the wave propagation image is rebuilt to display the damage.
利用时间反转法对波源的自适应聚焦能力，重建信号传播波动图，通过信号聚焦显示损伤位置和区域。
It presents a new approach to array imaging that is motivated by time reversal in random media (using) active transducers array in random media.
提出在随机媒质中采用时间反转镜对主动换能器阵列超声成像的一种新算法。
Combined the waveguide invariant and the time reversal reverberation hulling, a time reversal bottom reverberation null-broadening method is proposed.
本文结合波导不变性和时反海底混响零点设置方法，提出了一种利用波导不变性实现时反混响零点展宽的方法。
Based on the focalization ability of time reversal theory to the wave origin, the wave propagation was rebuilt by an image method which displays the damage as the focusing point.
利用时间反转法对波源的自适应聚焦能力，重建信号传播波动图，通过信号聚焦显示损伤位置和区域。
The cranking term breaks the time reversal symmetry, and the projection of the single particle angular momentum on the intrinsic symmetric axis is no longer a good quantum number.
推转项的引入破坏了时间反演对称性，单粒子角动量在内禀对称轴上的投影量子数已不再是好量子数。
This is the first part of our work on time reversal symmetry applied to non-equilibrium statistical stationary states from a unified microscopic quantum statistical point of view.
本文是作者从微观量子统计理论出发应用微观可逆性原理讨论非平衡统计定常态普遍性质的第一部份。
Once upon a time in as many as the stars, but this is the fate of the gear was open, time reversal in that year, that year, let me enjoy the taste of success and failure is how happy.
往事如星星般多，但是命运的齿轮就这样打开了，时间倒转到了那一年，那一年让我领略到失败与成功的滋味是多么开心。
Time Reversal processing (TRP) is a signal processing method based on the focusing property. It attached more attention in underwater acoustic communication, active detection and so on.
时间反转处理(trp)是利用这种聚焦特性的信号处理方法，它在水声通信、主动声纳检测这类脉冲—回波型领域的应用研究越来越受到重视。
The capability of time reversal processing for echo-to-reverberation enhancement is studied using computer simulation under the condition that target is in the middle of the shallow water guide.
针对典型的浅海波导环境，通过计算机仿真研究了目标位于波导中间深度条件下时间反转处理增强信混比的能力以及目标深度的变化对信混比增强能力的影响。
Of course, at one time or another, all of the aforementioned have been played out in complete reversal.
当然，在某一时间，上述所有可以在完全逆转中展现。
There can come a time when people no longer live for themselves but for those who, in a strange reversal, have come to depend on them.
总有一段时间人们并不为自己而活，而是很奇怪地，为依赖于他们的人而活。
This is a strange reversal of the situation at the time of the Greek crisis.
这种怪异的情形与希腊危机时截然不同。
Each reversal appears to have taken place in a very short time.
每一次反转看来都是在极短的时间内发生。
Each reversal appears to have taken place in a very short time.
每一次反转看来都是在极短的时间内发生。
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