释义 |
velocity modulation
velocity modulation n (General Physics) the modulation in velocity of a beam of electrons or ions caused by passing the beam through a high-frequency electric field, as in a cavity resonator velocity modulation
velocity modulation[və′läs·əd·ē ‚mäj·ə′lā·shən] (electronics) Modulation in which a time variation in velocity is impressed on the electrons of a stream. A television system in which the intensity of the electron beam remains constant throughout a scan, and the velocity of the spot at the screen is varied to produce changes in picture brightness (not in general use). AcronymsSeeVM |