【正】 Y2000-62169-67 0021146信号的完整性:一种交互式多媒体课程=Signal in-tegrity:an interactive multimedia course[会,英]/DelCorso,D.& Gregoretti,F.//Proceedings of the 1999International Conference on Microelectronic Systems Ed-ucation(MSE’99).-67~68(YP)Y2000-62357-1003 0021147页面逻辑结构的理解=Understanding the page logicalstructure[会,英]/Cinque,L.& Forino,L.//Proceed-ings of 10th Internarional Conferenee on Image Analysis