Automatic cleaning device of rotary dryer von ABUDU, GAYIT, MA XINWEN, KANG MING, XING MINGZHEN, LIU QINGWANG, LI XIANGYANG, HU SHAOFAN, WU QIANFENG, LIANG WENCHENG, WANG QINGCHANG, YAO MOBAI, YE YUQING, CHEN ZHICHAO

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