中文: abbr. no further requirement 不再需要; near field recording 近场记录; near field region 近场区域; net flux radiometer 净通量辐射计
中文: abbr. National Fenestration Rating Council 全国主窗设计评估委员会; National Forest Reservation Commission 全国森林保护委员会
中文: abbr. National Federation of Temple Sisterhoods 全国犹太教姐妹会联盟; Naval Flight Training School 海军飞行训练学校