2360 演示电阻箱各类教学仪器，物理仪器模型图片

p1Src=//y1shangxu.yzimgs.com/uploads/391770/20180810-21296831.jpg&p2Src=//y1shangxu.yzimgs.com/uploads/391770/20180810-80994286.jpg&p3Src=//y1shangxu.yzimgs.com/uploads/391770/20180810-68919053.jpg"