fluo - freq
- free mass point
- free material system
- free molecular flow
- free motion
- free neutron
- free nonuniform field
- free nutation
- free of aberrations
- free of water
- free orifice
- free oscillation
- free oscillation decay
- free oscillation operation
- free oscillation regime
- free oscillation technique
- free oscillations
- free oscillator
- free parameter
- free particle
- free particle system
- free particle trajectory
- free passage
- free path
- free pendulum
- free period
- free polarization decay
- free precession
- free propeller
- free quark
- free quasi-particle
- free radial-phase oscillations
- free radical
- free rolling
- free rotation
- free running
- free running frequency
- free running mode
- free space
- free space loss
- free state