9DUAN Li-wei,LU Zhong -hai,SHANG Guo-xin,QI liang-xin,WANG Ming -xue,SUN Feng-lei(Intrument Sechon, Zhujinag Hospital, First Military Surgeon University, Guangzhou, 510282, China,Education Guaranteeing Department, First Surgeon University, Guangzhou, 5.Discussion on Question of Importing Large-scale Equipment from Other Countries by Installment[J].International Journal of Plant Engineering and Management,1999,4(2):469-474.