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Year of Publication 23.07.2014
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Slide way type flexible positive torque oil pumping unit
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Year of Publication 02.04.2014
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Slide-way type flexible positive torque pumping unit
XU JINCHAO, SUN SHENGXIANG, WU CHUNMEI, HE WEIWEI, MA JUNCHI, LIU KAIXU, HAN XIUTING
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Year of Publication 15.01.2014
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