555 Provide some cad learned about the basic mater

Title: 555

Description: Provide some cad learned about the basic material, very helpful for beginners

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剖面图\11_01.DWG
......\11_02.DWG
......\11_03.DWG
......\11_04.DWG
......\11_05.DWG
......\11_06.DWG
......\11_07.DWG
......\plot.log
剖面图

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