信号与系统作为电子信息类专业的核心技术基础课，立体化教材主要包括主教材、教学参考书、电子教案、多媒体课件、试题库及课程学习网站等。
Its stereoscopic teaching materials mainly include major teaching materials, reference books, electronic teaching program, multimedia CAI, test questions, and network for course learning.
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