- 1. An advanced niobium - silicide based ultrahigh temperature alloy was prepared by vacuum consumable arc - melting method. 本文设计了新型 Nb 硅化物基超高温合金的成分,并采用真空自耗电弧熔炼法制备了其母合金锭. 来自互联网
- 2. A black red - brown , or colorless mineral , essentially ( Fe , Mn ) ( Nb, Ta ) 2 O 6, the principal ore of niobium. 一种黑色矿物, 由钇 、 铒 、 钽和其他矿物的氧化物组成. 来自互联网
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