| NC | 常闭NormallyClosed | |
| NC | 常闭NormallyClosed | |
| NIC | 不属本工程NotInContract | |
| NIC | 不属本工程NotInContract | |
| NMRnuclearmagneticresonance | 核磁共振 | |
| NMRnuclearmagneticresonance | 核磁共振 | |
| NO | 常开NormallyOpen | |
| NO | 常开NormallyOpen | |
| NPTthread. | 美国标准锥管螺纹 | |
| NPTthread. | 美国标准锥管螺纹 | |
| NPTthread. | 美国标准锥管螺纹 | |
| NTAaminotriaceticacid | 氨基三乙酸 | |
| NTS | 未按比例NotToScale | |
| NTS | 未按比例NotToScale | |
| Na-CMCsodiumsaltofcarboxymethyl-cellulose | 羧甲基纤维素钠 | |
| Na-CMCsodiumsaltofcarboxymethyl-cellulose | 羧甲基纤维素钠 | |
| Nailmakingmachines | 造钉机 | |
| Nailmakingmachines | 造钉机 | |
| NationalElectricalCode | 全国电气规程 | |
| NationalElectricalCode | 全国电气规程 | |
| NationalElectricalCode | 全国电气规程 | |
| Newtonianfluid | 牛顿流体 | |
| Newtonianfluid | 牛顿流体 | |
| Nomogram | 诺模图 | |
| Nomogram | 诺模图 | |
| Nomogram | 诺模图 | |
| NondestructiveTestingSystem | 非破坏评价解析装置 | |
| nacelle | 发动机短舱 | |
| nacelle | 发动机短舱 | |
| nail | 钉 | |
| nail | 钉 | |
| naildrawer | 拔钉钳 | |
| naildrawer | 拔钉钳 | |
| nailedjoint | 钉连接 | |
| nailedjoint | 钉连接 | |
| nailextractor | 拔钉钳 | |
| nailextractor | 拔钉钳 | |
| nailingmachine | 钉入机 | |
| nailingmachine | 钉入机 | |
| nailmakingmachine | 制钉机 | |
| nailmakingmachine | 制钉机 | |
| nailpuller | 拔钉钳 | |
| nailpuller | 拔钉钳 | |
| naivemodel | 简单模型 | |
| naivemodel | 简单模型 | |
| nakedhull | 裸船体 | |
| nakedhull | 裸船体 | |
| nakedwire | 裸线 | |
| nakedwire | 裸线 | |
| nameplate | 名牌 | |
| nameplate | 名牌,商标 | |
| nameplate | 名牌,商标 | |
| nameplate | 名牌 | |
| nameplate | 名牌,商标 | |
| nano | 那 | |
| nano | 那 | |
| nano-compositematerial | 纳米材料 | |
| nano-compositematerial | 纳米材料 | |
| nano-tech | 纳米技术 | |
| nano-tech | 纳米技术 | |
| naphthenecrudeoils | 环烷基石油 | |
| naphthenecrudeoils | 环烷基石油 | |
| naphthenoparaffiniccrudeoils | 沥青石蜡基石油 | |
| naphthenoparaffiniccrudeoils | 沥青石蜡基石油 | |
| napierianlogarithm | 自然对数 | |
| napierianlogarithm | 自然对数 | |
| narrowVbelt | 窄V带 | |
| narrowVbelt | 窄V带 | |
| narrowVbelt | 窄V带 | |
| narrowbandfrequency | 窄带频率 | |
| narrowbandfrequency | 窄带频率 | |
| narrowbandfrequencymodulation | 窄带档 | |
| narrowbandfrequencymodulation | 窄带档 | |
| narrowbandnoise | 窄带噪声 | |
| narrowbandnoise | 窄带噪声 | |
| narrowgage | 窄轨 | |
| narrowgage | 窄轨 | |
| narrowgagerailway | 窄轨铁路 | |
| narrowgagerailway | 窄轨铁路 | |
| naturalabrasive | 天然磨料 | |
| naturalabrasive | 天然磨料 | |
| naturalageing | 自然时效 | |
| naturalageing | 自然时效 | |
| naturalaging | 自然时效 | |
| naturalaging | 自然时效 | |
| naturalandsynthetic | 天然或人造 | |
| naturalandsynthetic | 天然或人造 | |
| naturalangleofrepose | 静止角 | |
| naturalangleofrepose | 静止角 | |
| naturalangularfrequency | 固有角频率 | |
| naturalangularfrequency | 固有角频率 | |
| naturalcirculation | 自然循环 | |
| naturalcirculation | 自然循环 | |
| naturalcirculationboiler | 自然循环锅炉 | |
| naturalcirculationboiler | 自然循环锅炉 | |
| naturalconvection | 自然对流 | |
| naturalconvection | 自然对流 | |
| naturalconvectionaircooler | 自然对琳气冷却器 | |
| naturalconvectionaircooler | 自然对琳气冷却器 | |
| naturalcooling | 自然冷却 |

