protel文件转换成pads文件
ThisdocumentcontainsinformationthatisproprietarytoMentorGraphicsCorporation.Theoriginalrecipientofthisdocumentmayduplicatethisdocumentinwholeorinpartforinternalbusinesspurposesonly,providedthatthisentirenoticeappearsinallcopies.Induplicatinganypartofthis