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  1. Oxford American Dictionary

    zone refining

    • IPA[zōn rəˈfīniNG]
    • n.
      a method of purifying a crystalline solid, typically a semiconductor or metal, by causing a narrow molten zone to travel slowly along an otherwise solid rod or bar to one end, at which impurities become concentrated.

    • noun: zone refining

    • 更多解釋

    zone refining

    • n.
      a method of purifying a crystalline solid, typically a semiconductor or metal, by causing a ...

    Oxford Dictionary