Unmanned aerial vehicle taking-off and landing device and unmanned aerial vehicle von WANG XUANYI, CUI FENG, HUANG XIAOBING, CHEN QIAN, ZHANG ZIYIN, HOU BAOWANG, ZHANG SHEXUAN

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Unmanned aerial vehicle taking-off and landing device and unmanned aerial vehicle von CUI FENG, HUANG XIAOBING, CHEN QIAN, LUO XINWEI, LIU SHENGBO, ZHANG XINLEI, ZHANG SHEXUAN

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Elliptical ring forge piece and forging forming method thereof von XIE YANG, DANG SHANG, GUO LEI, LI KEZHUO, CHEN ZHIMIN, ZHANG SHEXUAN

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Lightning rod convenient to mount and dismount von NIU CHUNHUI, LIU HUIFENG, LIU KAIMIN, SUN LIANGKUN, ZHANG ZIYIN, XU MINGDONG, ZHANG SHEXUAN

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Fabricated wallboard for transformer substation von NIU CHUNHUI, LIU HUIFENG, LIU KAIMIN, SUN LIANGKUN, ZHANG ZIYIN, XU MINGDONG, ZHANG SHEXUAN

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Unmanned aerial vehicle landing device and unmanned aerial vehicle von CUI FENG, HUANG XIAOBING, CHENG XIREN, YANG JIAN, ZHANG ZIYIN, HOU BAOWANG, LI BOJUN, ZHANG SHEXUAN

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Unmanned aerial vehicle for surveying and mapping rock-soil foundation von KWAK YOUNG-HO, ZHENG WEISHE, YUAN QING, XU WENFENG, JIANG KUN, LI DONG, LU YANHUA, ZHANG SHEXUAN

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Automatic connection method of virtual terminal logic loop based on fuzzy recognition von SHENG LIJUN, ZHOU HONGXIAO, MA LIHAI, WANG HAO, GAO XIAOJING, LI SHIPENG, ZHANG SHEXUAN

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Haze-preventive antimicrobial mask von QIN SHEXUAN, ZHANG WENZHENG

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Haze-preventive antimicrobial mask filtering piece von QIN SHEXUAN, ZHANG WENZHENG

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Double-layer plastic barrel for containing pure colloidal silver von QIN SHEXUAN, ZHANG WENZHENG

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Take antibacterial gauze mask of nanometer silver of medicine box breather valve von QIN SHEXUAN, YE MINGFA, ZHANG WENZHENG

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