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ＴｅａｃｈｉｎｇＲｅｆｏｒｍ ａｎｄＥｘｐｌｏｒａｔｉｏｎｉｎＥｎｇｉｎｅｅｒｉｎｇＤｒａｗｉｎｇ
LI Mei-１, TONG Shu-Qi-１, ZHANG Xue-Li-２
JOURNAL OF KUNMING METALLURGY COLLEGE . 2011, (1): 73 -76 .  DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０１１．０１．０１８