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产品介绍拼音电子发声挂图、拼音学习机、数学学习机。本系列产品将电子语音技术与传统的课堂教育结合起来,产品语音由央视资深播音员录
Product introduction Pinyin electronic sound wall charts, Pinyin learning machine, mathematics learning machine. This series of products combines electronic voice technology with traditional classroom education. Product voice is recorded by senior CCTV reporters.