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flotation techniques造句

"flotation techniques"是什么意思   

例句與造句

  1. Flotation technique for a hard - to - separate copper sulphide mine
    從凡口鉛鋅礦尾礦中回收硫精礦的研究
  2. It's difficult to find flotation techniques in a sentence. 用flotation techniques造句挺難的

相鄰詞匯

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