补充资料：电工词汇(N-R)

N
n-exponent,n-指数
N.T.C.thermistor,负温度系数热敏电阻器
Nansen bottle,南森采水器
Nansen opening-and-closing net,南森开团式网
narrow-band filter,窄带滤波器
narrow-band random vibration,窄带随机振动
narrow band spectrum,窄波段
national satellite,国土卫星
national standard,国家标准
natural convection,自然对流
natural electric-field method instrument,自然电场法仪器
natural environment,自然环境
natural field electro-detector,天然场电测仪
natural frequency,固有频率
natural frequency measurement,固有频率的测量
natural frequency of rotor/bearing system,转子支承系统固有频率
natural gamma spectromenter of logger,自然伽玛能谱测井仪
natural inherent frequency,自然固有频率
natural mode of vibration,固有振型
near field,近场
near infrared range(NIR)remote sensing,近红外遥感
near-optimality,近优性
nearest-neighbor,最近邻
nebulizer,雾化器
negative feedback,负反馈
negative knives linear,负刀联线
negative pressure,负压；真空
negative shock response spectrum,负冲击响应谱
negative strain,负应变
negative tempperature coefficient thermistor,负温度系数热敏电阻
nephelometer,浑浊度表
nephoscope,测云器
Nernst equation,能斯特方程
nest,嵌套
net pyrgeometer,净地球辐射表
net pyrradiometer,辐射平衡表
net radiation,净辐射；辐射平衡；辐射差额
net retention time,净保留时间
net retention volume,净保留体积
net sounder,网位仪
net terrestrial radiation,净地球辐射
network frame,网络帧
network management,网络管理
network model,网络模型
network protocol,网络协议
network technique,网络技术
neutral absorption,中性吸收
neutral filter,中性滤光片
neutral zone,中间区
neutrally buoyant float,中性浮标
Newton's fluid,牛顿流体
neutron dosimeter,牛顿流动定律
neutron dosimeter,中子剂量计
neutron logging instrument,中子测井仪
neutron fraiograghy,中子射线照相术
neutron spectromenter,中子能谱仪
neutron-gamma radiometer,中子伽玛辐射仪
Nickel-Chromium/CopperNickel thermocouple,镍铬-铜镍热电偶
Nickel-Chromium/NickelAluminium[Silicom] thermocouple，镍铬-镍铝[硅]热电偶

说明：补充资料仅用于学习参考，请勿用于其它任何用途。