二胡基本功训练教程（练习曲集）

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• intros：{"brand_intro":"中央音乐学院出版社成立于2003年，依托中国最高音乐学府的学术资源，专注于专业音乐教育出版。其教材由中央音乐学院教授团队编写，强调\"学院派\"训练体系。该社在二胡领域拥有多位国家级非遗传承人担任顾问，品控上实行\"教授初审-专家复审-演奏家终审\"三级审核，确保内容兼具学术性与实操性。","product_intro":"本书由中央音乐学院二胡教授刘长福主编，定位为\"专业院校级练习曲集\"。核心卖点是\"技术训练颗粒度极细\"——将长弓、快弓、顿弓等技巧拆解为120个微练习，每个微练习配有速度标记和练习时长建议。适用场景为专业院校学生日常练功、青年教师备课参考。相比其他教材，其最大优势是\"可量化\"——每首练习曲都有明确的\"达标标准\"（如速度、音准误差范围）。","key_specs":{"微练习数量":"120个，覆盖运弓、换把、揉弦、滑音等12大技术模块","达标标准":"每首练习曲标注\"合格速度\"\"优秀速度\"及音准误差允许值","配套资源":"含示范音频（MP3下载）、练习打卡表（可打印）","纸张规格":"A4大开本，乐谱字号大，适合老年学习者","适用人群":"专业院校学生、二胡教师、高水平业余爱好者（学琴3年以上）"}}
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