All MR imaging was performed by using spin echo(SE)and short time inversion recovery(STIR)sequences.
均采用自旋回波(SE)、短时反转恢复(STIR)序列。
In order to study laser propagation in inhomogeneous medium, Collins formula was improved by using time inversion characteristic of optic phase conjugation wave.
为了解决非均匀介质中的光传输问题,利用光学相位共轭波的时间反演特性,实现了对克斯林衍射积分公式的改进。
In the gap between Reality a and Reality b, in the inversion of realities, how far could we preserve our given values, and, at the same time, to what kind of new morals could we go on to give birth?
在现实A和现实B的鸿沟之间,在现实的倒转之中,我们还能保存我们的已知价值多久?同时,我们能够生产出的又是什么样的新的道德观?
For specific applications such as Unicode character ranges, inversion lists can save you a lot of time and effort.
在某些应用中,比如unicode字符序列,使用倒排表可以为您节省大量的时间,降低工作难度。
The inversion to the time domain of the effective relaxation modulus of this kind of composites is carried out. Finally, comparisons with other results are presented.
反演得到单向强化复合材料的有效松弛模量在时间域中的表达式,并且与其它结果进行了比较。
The oxygen inversion diffusion after decompression had two processes, which was associated with the time of useful consciousness and physiological effects.
高空迅速减压后氧的的反向弥散有两个过程,且与减压瞬间生理效应和有效意识时间有联系。
The conventional inversion for time domain is unfavorable to cross-hole seismic data in depth domain.
常用的时间域反演方法不能直接用于深度域的井间地震资料。
This paper deals with uniqueness of inversion of the nonlinear source term in heat equation with a class of nonlocal boundary of time.
探讨了热传导方程在非局部时间边界条件下非线性热源反演的唯一性问题。
The four common ultrasonic methods for measuring Q value in the laboratory, rise time, pulse echo, spectral ration and waveform inversion techniques are reviewed.
回顾了实验室中超声波测量Q值的四种常用方法:上升时间法、回声法、频谱振比法和波形反演法。
Finally, by applying Laplace numerical inversion technique the solutions in time domain can be obtained.
最后应用拉普拉斯数值反演技术得到时间域的解。
Extended Euclidean Algorithm is selected to realize inversion from the standpoint of saving time.
对比了两种模逆算法,从节约时间的角度选取了扩展的欧几里德方法。
Maintenance-free brushless drive motor with frequency inversion, has high start torque and short acceleration time.
免维护高力矩无刷变频电机直接驱动,启动力矩大、加速时间短。
The method requires less computation time and smaller memory than the direct computation of volume integral equations, since the large scale matrix inversion may be avoided.
由于不必进行直接的大型矩阵求逆运算,因而与体积分方程的直接解法相比,所需的机时更少,并减少了对内存的要求。
The genetic algorithms are used for high power microwave model inversion recognition, at the same time, the paper analyze the sufficiency function and the controlled variable.
将遗传算法应用于高功率微波模式的反演识别,并对适应度函数、控制参数作了分析。
A new statics inversion method with optimal refraction traveling time is studied.
二维折射最优旅行时反演近地表模型方法。
The time-height variation of turbulent intensity in the inversion layer is incontinuous, the transfer of momentum and heat is gusty with time and sandwich with height.
逆温层内部湍流强度的时-空变化是不连续的,动量和热量的输送在时间上是阵性的,在高度上是分层的。
The micro-processor and VLSIC are core of the master clock, which consists of a control unit and can adjust all slave clocks (except standard time slave clock) clockwise and inversion quickly.
器件为核心,构成一控制单元,操作非常简单,且可以同时对所有子钟进行顺时针和逆时针快速调整,运行可靠。
The fitting difference is reduced and the precise of quantitative interpretation is improved by means of joint TF inversion with time and frequency window data.
利用时间窗数据和频率窗数据所进行的联合时-频反演,缩小了拟合差,提高了定量解释精度。
General speaking, the matrix inversion will consume a large amount of computation time, which heavily hinder the application of 3-d implicit scheme in waveform migration.
通常,这种矩阵的求逆将耗费大量计算时间,严重制约了三维隐式方法偏移在实际资料处理中的广泛应用。
The distribution of residual oil has been studied using seismic inversion and time lapse attribute difference. The result of our study indicates that the area has certain exploitation potential.
利用地震反演和时移地震资料差异属性变化研究了该区剩余油分布规律,表明该区还有一定的开发潜力。
At the same time, the method has also laid the foundations of initial model definition in TEM automatic inversion.
与此同时,该方法的实现也为瞬变电磁自动反演中初始模型的构制奠定了基础。
GABWIT is a software of inversion for 3d crustal velocity structure using seismic body travel time data and genetic algorithms.
GABWIT是应用地震体波走时资料、遗传算法反演地壳三维速度结构的软件。
In computing the scattering fields, the determination of the T-matrix involves matrix multiplication and inversion, which consumes considerable time when the size of the particle is large.
在散射场的计算中,T矩阵的计算涉及到矩阵的乘法和求逆,当粒子尺寸很大时,这两种矩阵运算特别是求逆将消耗大量的时间。
According to the theory of generalized inversion, we can get the parameters of velocity and thickness in each layer with joint inversion of multilayer reflection wave's travel time.
从广义反演理论出发,对多层反射波的走时联合反演,可以同时获得所有的各层速度及厚度参数。
The transform has been reflected in these two aspects: one is the bold attempts of the meta-fiction writing and the other is the inversion of narrative time.
他的小说叙事艺术变革体现在两方面:一是“元小说”的大胆尝试,二是叙事时间的颠倒错乱。
Both priority inheritance protocol and priority ceiling protocol are common solutions to priority inversion in real-time system (RTOS).
优先级继承协议和天花板优先级协议都可在一定程度上解决实时系统(RTOS)中的优先级倒置。
A new pressure and saturation change nonlinear inversion method is proposed using time-lapse seismic data, which is based on hybrid optimization method and rock-physics model.
在现有研究基础上提出基于岩石物理模型和混合优化算法的时移地震反演压力、饱和度变化方法。
The results by inversion show that the equivalent true resistivity-time curves for layers could be used to reveal the physical process int he respective layers intuitively and clearly.
结果表明:反演得到的各层等效电阻率曲线可以直观、清晰地反映地下介质内部发生的物理过程。
The results by inversion show that the equivalent true resistivity-time curves for layers could be used to reveal the physical process int he respective layers intuitively and clearly.
结果表明:反演得到的各层等效电阻率曲线可以直观、清晰地反映地下介质内部发生的物理过程。
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