Magnetic type auxiliary tool for penetrating through protection tube by jumper connection optical fiber von ZHANG PENG, MENG GUOGANG, GONGYE XIANGGUANG, YANG QINGMING, WU JIAN, LI CHUNYU

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Device for road upper hose, electric wire and cable are prevented rolling von GAO WEIFEI, GONGYE XIANGGUANG, YAN BINGQI, HU TENGHUA, SONG SHANGLING, YANG TINGLE, FENG XIANG, KONG SIYUAN, ZHU BENQIANG

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Key parameter testing device and method of multi-needle vertical grounding body von WANG BEIBEI, YANG BAO, WEN JIAN, LIU ZONGJIE, GONGYE XIANGGUANG, ZHOU MINGWANG, LI QICHANG, ZHANG QIANG, ZHANG ZHIYU, YANG DI, WANG XIANGZHE, ZHU RUITING, WANG FENG, FENG YINGCHUN

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Method and system for realizing fast transmission of seasonal agricultural irrigation and drainage pause work order in marketing system von GONGYE XIANGGUANG, YAN YAN, ZHANG MENG, CHANG QING, QIAO YUANGE, MIAO HONGXIA, KONG SIYUAN, KONG QINGYING, ZHU BENQIANG

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