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Terms for subject Oil / petroleum containing Walking | all forms | exact matches only
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cross over walking过零晃动
pipeline walking巡线
walking beam游梁
walking-beam counterweight游梁平衡块
walking-beam pumping unit游梁式抽油机
walking beam suspension平衡梁式悬挂
walking crane步行式吊车
walking dragline步行式拉铲挖掘机
walking machine步行机
walking patrol步行巡视管线