prin - puls
- principal axes
- principal axes of inertia
- principal axes of strain
- principal axes of stress
- principal axis
- principal beam
- principal characteristic
- principal clock
- principal current
- principal feedback
- principal focus
- principal inertia axis
- principal layout
- principal lobe
- principal mode
- principal motor
- principal normal
- principal nuclear facility
- principal oscillation
- principal part
- principal plane
- principal plane of bending
- principal power
- principal quantum number
- principal rafter
- principal reactance
- principal reinforcement
- principal strain
- principal stress
- principal stress trajectory
- principal tapping
- principal terminal
- principal theorem
- principal voltage
- principal wave
- principal winding
- principle
- principle of charge compensation
- principle of conservation of energy
- principle of continuity of electric current
