变压器，JMB-50VA(铜) 220/12 上海临嘉科教仪器有限公司

p1Src=//y1.yzimgs.com/uploads/391770/20250116-38628428.jpg&p2Src=//y1.yzimgs.com/uploads/391770/20250116-62927517.jpg&p3Src=//y1.yzimgs.com/uploads/391770/20250116-40805395.jpg