The existing pyrometallurgical process to prepare metal niobium is complex, expensive, energy intensive and probably polluting.
现有的金属铌和铌基合金制备工艺复杂、成本高、能耗大、污染环境。
The existing pyrometallurgical process to prepare metal niobium is complex, expensive, energy intensive and probably polluting.
现有的金属铌和铌基合金制备工艺复杂、成本高、能耗大、污染环境。
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