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AAC+的原理，结构介绍总览性文档，来自AAC＋发明者coding technology-AAC+ in principle, to introduce an overview of the structure of the document, from AAC+ inventor coding technology

【谷速软件】matlab代做编程 ct投影模拟器 可以作为参考使用-[Valley] matlab doing some speed software programming ct simulator can be used as a reference projection