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  1. zone refining

    • 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

  2. 知識+

    • "花街"的英文翻譯

      ...,how can an English speeker ever think of making a word to refine a place like this? Uhm,Chinese is much much more fun! As...

    • )) 英文的作文 (( 非常的急 ><

      ... short and temperate in climate in winter. Time zone Greenwich +8 standard time. Kaohsjung...、steel、petrochemical industry、machinery、plywood、can、oil refining industry、fishery and food industry. There are...