file:3-13习题.zip file:0429-三维出三视图.exe file:0502-21期-8节.exe file:教材28页第2个习题.exe file:拉伸S和拉长LEN用法.exe file:习题3-6，教材32页，钩子三维（0618）.exe file:阳光房-屋顶（0619）.exe file:教材33页，习题3-7（0617）.exe file:0707-图层.exe
file:3-13习题.zip file:0429-三维出三视图.exe file:0502-21期-8节.exe file:教材28页第2个习题.exe file:拉伸S和拉长LEN用法.exe file:习题3-6，教材32页，钩子三维（0618）.exe file:阳光房-屋顶（0619）.exe file:教材33页，习题3-7（0617）.exe file:0707-图层.exe