freq - gap
- freqency-actuated autoreclosing
- frequence control
- frequency adjustment
- frequency analysis
- frequency analysis technique
- frequency analyzer
- frequency band
- frequency bridge
- frequency changer set
- frequency characteristic
- frequency coefficient
- frequency collapse
- frequency comparator
- frequency comparison
- frequency compression
- frequency control
- frequency control area
- frequency control band
- frequency converter
- frequency counter
- frequency cutoff
- frequency departure
- frequency deviation
- frequency discriminator
- frequency doubler
- frequency locking-in
- frequency management
- frequency monitor
- frequency of failures
- frequency of maintenance
- frequency of repairs
- frequency regulation
- frequency regulator
- frequency resolution
- frequency runaway
- frequency sensor
- frequency sharing
- frequency shedding
- frequency shift
- frequency slot
