黑白电视机原理、故障演示板 WSC-SJ9204型 北京同德创业科技有限公司

p1Src=//y1.yzimgs.com/uploads_old/378650/2012041318224893_old.jpg&p2Src=//y1.yzimgs.com/uploads_old/378650/2012041318224893_old_1.jpg&p3Src=//y1.yzimgs.com/uploads_old/378650/2012041318224893_old_2.jpg