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Terms for subject Oil / petroleum containing 根部 | all forms | in specified order only
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根部rootage
根部radical
根部凹坑internal undercut
根部半径root radius
根部root bead
根部焊道stringer bead
根部熔深root penetration
根部间隙root opening
纵向根部开裂longitudinal root crack
美国能源部摩根顿能源技术中心Department of Energy, Morgantown Energy Technology Center
隔水管根部riser stub