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Terms for subject Pipelines (6 entries)
concave roll 带槽〔孔型,刻痕〕轧
die orifice 机头孔型
dies hole 模槽〔腔,孔〕
hard service 负荷工作状态
hollow guide 空腔波导管
tungsten inert gas arc welding 钨极惰性气体保护焊

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