复反射群作为与实反射群不同的一类反射群，近年来得到了人们越来越多的研究。
As a class of finite reflection groups and different from finite real reflection groups, finite complex reflection groups are studied by more and more people in recent years.
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.
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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