wu yuan tui li yan jiu
Wang Ruo’en1) He Bin2) Dept. of Basic Courses 2) Research Institute of MEA;GDUT;Guangzhou;510090)
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ying shi wei xiu ji shu cai xi tong de yan jiu
Feng guang1) Feng yan2) Zeng Guangxing2) Network Information Center 2)Dept. of Electric Engineeringand Automation;GDUT;Guangzhou;510090)