A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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