图 上酒短大峰 色a人口 LECTURE 12-I ME371/ME337 DESIGN AND MANUFACTURING Gear train Covered Cha9 in Design of Machinery SHAN 手柄 齿轮1 磁铁 齿轮2 齿轮4 线轮 ·LEDT 齿轮3 11 Gear train LECTURE 12-II ME371/ME337 DESIGN AND MANUFACTURING Covered Cha9 in Design of Machinery