document.write("实习报告.doc 5.57 KB开题报告.doc 33.53 KB系统控制图.dwg 68.50 KB纵轴系统装配图.dwg 105.53 KB装配图.dwg 96.36 KB说明书.doc 500.16 KB车床主传动系统.dwg 244.30 KB轴.dwg 41.25 KB齿轮.dwg 42.73 KB");