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Structure is transversely assembled to modularization prefabricating bridge pier
LIU BIN, ZHU ANJING, LI YANG, PU BEICHEN, MA JUN, WEI QIZHONG, PENG ZHIWEI, PANG WEI
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Annular-opening gear pumping unit without walking beam
XIAO JIANHONG, LI YONGLIN, ZHAO GUIMING, WEI QIZHONG, LIU GUANGDONG, ZHAO TONGQIANG
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Year of Publication 16.10.2013
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Walking-beam-free oil pumping unit with open ring gear
XIAO JIANHONG, LI YONGLIN, ZHAO GUIMING, WEI QIZHONG, LIU GUANGDONG, ZHAO TONGQIANG
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Year of Publication 21.08.2013
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