beam - body
- beam
- beam aberration
- beam absorber
- beam acceleration
- beam acceptance
- beam adjustment
- beam aiming accuracy
- beam alignment
- beam amplitude diffusion
- beam analyzer
- beam antenna
- beam aperiodical instability
- beam aperture
- beam area
- beam attenuation
- beam axis
- beam balance
- beam blackout
- beam blanking
- beam blow-up