N
- N
- Narrow-Band Noise
- Net Positive Suction Head (NPSH)
- Net Positive Suction Head Available (NPSHA)
- Net Positive Suction Head Required (NPSHR)
- Node
- Node Barrel
- Non-Destructive Examination
- Non-Destructive Testing
- Non-Hazardous Area
- Non-Intrusive Inspection
- Normal (Gaussian) Distribution (NPL G11)
- Normal Operating Point
- Normal Operation
- Normal Speed
- Notified Body (Art. 12)
- Nozzle
- Nuisance Alarm