NF

= NanoFarad,纳(诺)法(拉); = Narrow Frequency-band, 窄频带; = Negative Feedback, 负反馈，负回授; = Night Frequency, 夜间(通信)频率; = Noise Figure, 噪声系数; = Normal Form, 规格化形式，正规形式; = Normal Formula, 标准式; = Not Found, 未发现，未找到