First, the technical structure of principle: Low profile host the first high-end drum patterns, outer ring gear driven rotating cylinder.
技术结构原理：主机外形头高尾低式滚筒形态，齿轮带动筒体外齿圈转动。
First, the technical structure of principle: Low profile host the first high-end drum patterns, outer ring gear driven rotating cylinder.
技术结构原理：主机外形头高尾低式滚筒形态，齿轮带动筒体外齿圈转动。
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