| nugatory contract | 无效的合同 |
| nullify registration
| 注销登记 |
| number of existing ships
| 现有船舶艘数 |
| number of ships needed in line
| 航线需要的船舶数 |
| numbering
| 编号 |
| numbering machine
| 编号机 |
| numeral flag
| 数字旗 |
| numeral-controlled drilling-milling machine | 数控钻铣床 |
| numerical control hydraulic press
| 数控液压机 |
| numerical control lathe
| 数控车床 |
| numerical control machine
| 数控机床 |
| numerical controlled bending of pipe
| 数控弯管 |
| numerical controlled drawing
| 数控制图
|
| numerical controlled drawing machine
| 数控绘图机 |
| numerical controlled flow line for pipe shaping
| 数控管子加工流水线 |
| numerical controlled pipe-bending machine
| 数控弯管机 |
| numerically controlled hydraulic press
| 数控液压机 |
| numerically-controlled technology
| 数控技术 |
| nurse
| 护士 |
| nut
| 螺母,螺帽
|
| nut of propeller shaft
| 螺旋桨轴螺帽 |