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Fracturing fluid mass flow continuous liquid preparation system for hydraulic fracturing and liquid preparation process of system von AN DENGZHOU, GU XIAOZHONG, YANG LANDONG, WANG WENKAI, REN YONGQIANG, YANG YANMING, GU YANLONG, XUE HONGJIANG

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Device and method for wirelessly positioning depths of strings in real time during coiled tubing operation von DU XINFANG, XU HAOYANG, YANG LANDONG, REN YONGQIANG, XUE HONGJIANG, LI YAN, ZHENG BAODONG, LI ZHIYONG, XU KEBIN

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哈尔滨市区县（市）、市直单位中心组学习情况调查 von 王洪 任锦华 蓝国铧 高广东

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