Title: Protel 2004 dian lu yuan li tu ji PCB she ji
Description: Ben shu cong shi yong jiao du chu fa, Quan mian jie shao le shi yong Protel 2004 jin xing dian lu she ji he PCB zhi zuo de ji ben fang fa, Jiang jie le dian lu yuan li tu he yin zhi dian lu ban de she ji fang fa, Dian lu fang zhen he PCB xin hao wan zheng xing fen xi.