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mobile welding machinery
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mobile welding machinery
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工学
铁路养路机械
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mobile welding machinery
移动式焊轨机械
一次完成钢轨焊接和推凸作业的自运行焊轨专用作业机械。是无缝线路钢轨铺设及断轨紧急抢修的主型机械。
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Development and Research Center of the State Post Bureau(China)
Development and Sects of Ci Poetry in the Tang and Song Dynasties
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