Given the stability, error estimate and numerical experiments for the nonlinear equation of second order backward difference(4)Given the weighted of second order convolution quadrature.
给出非线性方程的二阶向后差分格式稳定性、误差估计。 （4）给出二阶卷积积分的权重。
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。
This paper compares the difference between science and technology, and analyses the reason why China is backward in terms of science and technology.
比较了科学与技术之间的区别，并在此基础上，分析了中国古代科技领先近代科技落后的原因。
Compared with the forward scattering, the scattering intension difference of backward scattering was more less than the forward scattering.
相对于前向散射，后向散射的散射强度不如前向散射差别大。
The usual shift of the position of the same part of speech no matter backward or forward does not cause a great semantic difference.
从通常位置的角度来看，同一句子成分可以前后移位，这种移位，一般不会造成意义上的很大变化，但是修辞效果往往不同。
The forward-backward difference can not only detect the static and motion regions but also detect the 3-2 Pull-Downed movie sequences.
对于检测到的电影序列，则进行3 2下拉恢复处理，输出电影模式的逐行扫描帧；
A new principle of switched-capacitor RLC simulation, based on backward difference transformation, is presented. SC negative impedance converters and inductance simulation circuits are designed.
本文采用后差变换，提出实现模拟电阻，电感和电容特性的开关电容仿真电路的新原理。
A new principle of switched-capacitor RLC simulation, based on backward difference transformation, is presented. SC negative impedance converters and inductance simulation circuits are designed.
本文采用后差变换，提出实现模拟电阻，电感和电容特性的开关电容仿真电路的新原理。
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