1) time-term inversion
时间项反演
1.
In the paper, a near surface model is simulated, and then one initial model is created quickly by time-term inversion method for tomography inversion.
通过模拟近地表模型,利用时间项反演方法快速建立初始模型,提高了层析反演的精度,加快了收敛速度,减少了迭代次数。
2.
In the paper,two near-surface velocity models are simulated,and then inversion velocity models are created by time-term inversion with travel-time difference curve method.
因对初至旅行时层数的确定和拐点拾取存在不确定性,导致时间项反演方法在近地表复杂区建立的速度模型精度不高,静校正效果不理想。
2) Time reversal
时间反演
1.
As a technique to focus signals both temporally and spatially in complex media, time reversal (TR) was first applied in acoustics, and in recent years it was introduced into electromagnetic wave field.
时间反演(TR)作为一种在复杂媒质中实现时间和空间聚焦的技术,最初应用于声学,近年来被引入电磁波领域。
2.
Time reversal (TR) technology was first applied in acoustics field by M.
时间反演(Time Reversal: TR)技术是由M。
3.
As a technique to focus signals both temporally and spatially, time reversal (TR) was first applied in acoustics, and in recent years it was introduced into wireless communication field.
时间反演(Time Reversal)技术具有时间聚焦和空间聚焦的特性,最初应用于声学,近年来被引入无线通信领域。
4) time reverse
时间反演
1.
inversion of space and time reverse during the interaction of nucleons.
利用核子相互作用中的空间转动,空间反演和时间反演的不变性,求得自旋为1/2的极化核子散射振幅的一般形式。
5) time reversal method
时间反演法
1.
The conductivity distribution was reconstructed from the pressure distribution on the spherical detection surface with the time reversal method.
本研究构建三维柱状线圈和二层同心球模型以模拟成像物理环境,借助有限元软件ANSYS分析瞬态电磁场,并根据分析结果,进行MAT-MI正问题声场计算,应用时间反演法进行电导率的重建。
6) space-time inversion
空间-时间反演
1.
asing on quantum mechanics, according to the fundamental symmetry that the space-time inversion is equavalent to particle-antiparticle transformation, the massenergy relation and Lorentz transformation in special relativity are derived.
在量子力学基础上，根据空间－时间反演等价于正反粒子变换这一基本对称性。
补充资料：时间
实际上，时间单位首先从天文观测来确定的，“1平太阳日或1天（1昼夜）”是以地球相对于太阳的自转周期为基准来计量的，一个平太阳日的1/86400为1秒；后来发现地球自转不均匀，1960年国际度量衡大会把时间基准改为以地球绕太阳公转周期，即规定为1900年地球公转周期（回归年）的1/31556925.9747为1秒；随着精确、稳定的原子钟制成，1967年国际度量衡大会规定国际单位制原子时的时间单位“秒（长）是两个超精细能级之间跃进所对应辐射9192631770个周期的持续时间”。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条