By using backward difference of space-time intensity correlation function with respect to time delay, the two-dimensional velocity vector of a moving diffuser can be measured.
利用远场时变散斑空-时强度相关函致的有限差商可以测量散射体运动的二维速度矢量。
Live in such a change in time and space of people's awareness of things are changing for the establishment of the images in the brain symbol, the difference will naturally arise.
生活在这样变化的时间和空间的人们对于事物的认知也在变化，建立在大脑中的映像符号，自然会出现差别。
The mixed partial differential terms of time variables and space variables in the pseudo-parabolic equation make the discussion of the difference scheme more difficult.
伪抛物型方程中关于时间与空间变量的混合偏导项给差分格式的讨论带来了一定难度。
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