固有频率 natural frequency?
自然泄漏 natural leak
固有振荡 natural oscillations?
固有波长 natural wavelength?
助航设备 navigation aids
导航 navigation?
导航计算机 navigational computer
航海卫星 navigational satellite
导航卫星跟踪网 navigational satellite tracking network
钕玻璃激光器 nd glass laser
中子掺入硅 nds
非破坏性试验 ndt?
自然泄漏 natural leak
固有振荡 natural oscillations?
固有波长 natural wavelength?
助航设备 navigation aids
导航 navigation?
导航计算机 navigational computer
航海卫星 navigational satellite
导航卫星跟踪网 navigational satellite tracking network
钕玻璃激光器 nd glass laser
中子掺入硅 nds
非破坏性试验 ndt?
负电子亲合力光电阴极 nea photocathode
接近式曝光机 near contact printer
接近式曝光 near contact printing
近地轨道 near earth orbit
近回波 near echo
近端串话 near end crosstalk
近红外区 near infrared region
近红外线激光器 near ir laser
近单色辐射 near monochromatic radiation
近空 near space
近紫外线区 near ultraviolet range
近紫外线曝光 near uv exposure
近紫外线抗蚀剂 near uv resist
管颈 neck?
针状晶体 needle shaped crystallite
针式电报机 needle telegraph
针阀 needle valve?
非门 negation gate
阴性的 negative
负电子亲合力电子发射极 negative affinity electron emitter
负极性爹 negative amplitude modulation
负原图 negative artwork
负偏压 negative bias
负电荷载劣 negative carrier
下降特性 negative characteristic
负电荷 negative charge
负电流 negative current
负电子亲合力 negative electron affinity
负性胶 negative emulsion
负回授放大器 negative feedback amplifier