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in this paper,a new variable interpolated filter in dvb-s(digital vidoe broadcast by satellite) is introduced based on the common filter of cascaded integrator comb.firstly a cic filter module with interpolation factor 2 is designed,then we could reuse the basic module according to the interpolation factor.based on the theory of cic filter,the filter with fpga is simulated and synthesized,the results is given,and realizes it in the system of dvb-s.

摘 要：在数字上变频中常用的cic滤波器的基础上，提出了一种适用于dvb-s系统的可变插值率cic滤波器的实现结构，首先实现一个内插因子为2的cic滤波器单元，然后根据不同的内插因子要求，来重复地调用这些内插因子为2的基本滤波器模块，这种cic滤波器的实现结构符合结构化的设计思想。

Simulated ray of the beamline has been built to check and measure sagittal focusing facula.

建立了光束线模拟光路，可以实现对弧矢聚焦效果的检测。

The formation and characteristics of a fan delta in the steep slope of a fault basin are simulated through flume experiments.

通过水槽实验模拟断陷盆地陡坡带扇三角洲的形成过程及其发育，剖析其沉积动力机制和内部结构特徵。

Eight management projects were simulated by SPACE model in terms of the data from Dongfanghong Forest Farm of Dailing Forestry Bureau, Heilongjiang Province.

应用SPACE模型对黑龙江省带岭林业局东方红林场某研究样地进行了不同经营方案的模拟，并建立了反映森林多效益功能的层次分析评价结构模型。

First, the replacement of the traditional fast Fourier transformation with discrete cosine transformation in additive white Gaussian noise channel to set up OFDM system is analyzed and simulated in this article.

首先，在加性白高斯噪声信道中，本文分析和仿真了用离散余弦变换替代传统的快速傅立叶变换宋实现OFDM系统。

Three dimensional unsteady flow field around a simplified fastback car in process of accelerating was simulated numerically with computational fluid dynamicsmethod.

用CFD方法对直背式轿车加速过程中非定常外流场进行了数值模拟，计算出不同速度及加速度情况下汽车的气动阻力。

The flow field around a simplified fastback car with rear view mirrors and aerodynamic noise at some receiving point were numerically simulated and analyzed using CFD software FLUENT.

应用计算流体力学软件FLUENT对带后视镜简化直背式轿车外部流场及车外某接收点处的气动噪声进行了数值计算和分析。

The criterion is formed and the fault line is detected according to the analysis of correlation degree of measured waveform and simulated waveform of each feeder line's zero sequence current.

对各馈线零序电流的实测波形和由测后模拟法所求解的波形在一定数据窗下进行相关度分析，籍此形成选线判据，实现选线。

The results demonstrate that the EACH is suitable for categorization but cannot well present the continuous characteristic of the simulated function, while the FEIS can nicely fit the continuous mathematical function and well forecast the chaotic time series.

最后将此模式应用於兰阳溪流域洪水时期水位的预测上，并与倒传递类神经网路(Back Propagation Neural Network，BPNN)做一比较，我们可以证实FEIS对於兰阳溪流域的水位预测，具有优越的学习能力及推估能力。

Based on these test results, a coated fiber bundle model have been developed to describe stress strain relationship of composite. The simulated curves fit test points we...

根据材料在不同应变率下的试验结果，本文提出了计及应变率强化效直的复合丝束统计本构模型，模型拟合的结果与试验结果吻合得很好。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。