山东省莱西县南墅石墨矿位于胶东隆起栖霞复背斜的南翼，石墨赋存于太古界胶东群旌旗山组刘家庄大理岩段。

Nanshu graphite deposits, located at the south side of Qixia synclinorium in Jiaodong uplift, exist in Liujiazhuang marble member of Jingqishan formation, Jiaodong group of Archaeozic Erathern.

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该方法是基于最小相位滤波器的复倒谱系数和其群迟延函数以及其系统函数之间的关系，通过一个非线性的递归方程求解分母多项式的系数。

Based on the relationship between the group delay function and the cepstral coefficients, the denominator polynomial coefficients can be determined through a nonlinear recursive difference equation.

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本文提出了基于FPGA技术实现数字复接系统的设计方案，并介绍了基群与二次群之间的复接与分接的系统总体设计。

This paper puts forward a design method of digital multiplex system with FPGA, and introduces the whole system of multiplexing and demultiplexing between primary group and secondary group.

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