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单词 parametric amplifier
释义

WordReference Random House Unabridged Dictionary of American English © 2024
parametric amplifier, [Electronics.]
  1. Electronicsa device, as an electron tube or transistor, that amplifies a high-frequency input signal by sinusoidally varying the reactance of the circuit.
  • 1955–60

Collins Concise English Dictionary © HarperCollins Publishers::
parametric amplifier n
  1. a type of high-frequency amplifier in which energy from a pumping oscillator is transferred to the input signal through a circuit with a varying parameter, usually a varying reactance
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