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Year of Publication 17.06.2015
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Year of Publication 19.07.2019
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Year of Publication 19.07.2019
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Drilling system based on double-wall drill rod
SUN YU, ZHAO PENG, SONG RONGRONG, ZHU HUANGANG, ZHAO XULONG, DENG LIN, XU QIANG, CAO QIANG, ZHAO YAKUN, MIAO ZHIYU, LI JIANCHENG
Year of Publication 08.08.2017
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Year of Publication 08.08.2017
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Drilling system based on double -walled drilling rod
Cao Qiang, Zhao Peng, Miao Zhiyu, Zhao Yakun, Xu Qiang, Li Jiancheng, Zhao Xulong, Zhu Huangang, Sun Yu, Deng Lin, Song Rongrong
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Year of Publication 24.08.2016
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Double -walled drilling rod drilling system's water conservancy diversion pressurizing piston
Cao Qiang, Zhao Peng, Miao Zhiyu, Zhao Yakun, Xu Qiang, Li Jiancheng, Zhao Xulong, Zhu Huangang, Sun Yu, Deng Lin, Song Rongrong
Year of Publication 24.08.2016
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Year of Publication 24.08.2016
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