Under-pressure non-production-stop blocking device for leakage of insulated joint von GUO ZUOYANG

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Powerful transmitter von GAO YANG, GUO ZUOYANG

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Pipeline coating device von GAO YANG, GUO ZUOYANG

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Pipeline coating apparatus von GAO YANG, GUO ZUOYANG

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Heavy -calibre monomer cyclone von GAO YANG, WANG LEI, GUO ZUOYANG, LEI ZHIYUN, ZHANG CHENGXI

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Automatic compensation type magnetic descaling pipe cleaner von ZHANG YINGBO, SONG XUEHAO, GUO ZUOYANG, XU LINYUAN, HAN YANJUN, LIU BOZHI, BAI RUI, CAO-HAO FEIYANG, MA SHANGPING, DU CHUNGUO

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Localizable automatic draining pipe cleaner von Tan Qiuzhong, Chen Huan, Guo Zuoyang, Chen Shijun, Chen Liang, Yang Yong, Bi Jingjing

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Effect of preionization in Aton-type Hall thruster on low frequency oscillation von Yu, Da-Ren, Wei, Li-Qiu, Zhao, Zuo-Yang, Han, Ke, Yan, Guo-Jun

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Transportation perforation device of delayed grading detonating pipe von LIU XUEFENG, HUANG YUHUA, SONG JIE, GUO HAIDONG, YUAN XIAOTAO, LI ZUOYANG, XIAO SHENGBIAO, ZHANG YONGLIANG, JIANG BINGXUAN, SU CHANG, CHENG XIANHUA, FAN DAMING, ZHOU JUAN, AILIJIANG. YIBULAYIN, SHI ZHIQIANG

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Drilling mud continuous circulation process and equipment von LI KUIYI, ZHANG ZUOYANG, GUO HAIJUN, LIU LI

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Stamping forming process and trimming and shaping composite mould for automobile roof cover von HE PENGSHEN, WANG HAILING, ZHANG ZUOYANG, LU QIAO, CHEN SHITAO, GUO BEN

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Cooling system of oil-immersed self-cooling transformer von GONG NI, ZHOU JING, KANG LANXIN, GUO ZHIRONG, LIAO XIAOQIN, LI SHUN, LIU XIUFENG, SHEN DAQIAN, HE JUN, MA ZIWEI, ZHU SHAOTIE, WU YINGLIN, KE XIAOHUI, XIONG MING, MO QINSEN, WANG GAN, TU BIN, LUO GAO, YIN ZUOYANG

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Continuous positive and negative integrated sand washing device for oil well von LI KUIYI, ZHANG ZUOYANG, SUN YUXIANG, GUO HAIJUN, LIU LI

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