NBSn.美国国家标准局(英国新标准线规)NBabbr.注意(=nota bene)Nb-based solid solution alloys铌基固溶体合金NBBS Network Broad Band Services网络宽带服务NBS National Bureau of Standards美国标准局非破坏性试验Nb-containing low carbon steel含Nb低碳钢NBCD Natural Binary Coded Decimal自然二进制编码的十进制Nb-Si based in-situ composite铌硅基共晶自生复合材料NBC filtration and ventilation unit滤毒通风装置NBCH Natural Binary Coded Hexadecimal纳拉赞Nb-High Performance Structural Steel铌高性能结构钢NBR Modified phenolic molding compound丁腈橡胶改性酚醛压塑粉