prot - qual
- protecting [protection] signal
- protecting [protective] means
- protection
- protection against heat
- protection against spottiness
- protection controller
- protection environment
- protection level
- protection mechanism
- protection scheme
- protection state
- protection switching
- protection violation
- protection [protective] circuit
- protection [protective] cover
- protection [protective] equipment
- protective
- protective action
- protective agent
- protective appliance
- protective clothing
- protective device
- protective envelope
- protective inventory
- protective logic
- protective measures
- protective paint
- protective redundancy
- protective service
- protective signaling
- protective stock
- protective [safety] interlock
- protector
- prototype
- prototype approach
- prototype construction
- prototype design
- prototype development
- prototype equipment
- prototype fabrication
