电流大小磁性开关CK3
上海临嘉科教仪器有限公司
p1Src=//y1.yzimgs.com/uploads/391770/20171225-25170964.jpg&p2Src=//y1.yzimgs.com/uploads/391770/20171225-21932275.jpg&p3Src=//y1.yzimgs.com/uploads/391770/20171225-91998053.jpg