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单词 power amplifier
释义

WordReference Random House Unabridged Dictionary of American English © 2024
power am′plifier, [Elect.]
  1. Electricityan amplifier for increasing the power of a signal.
  • 1915–20

Collins Concise English Dictionary © HarperCollins Publishers::
power amplifier n
  1. an amplifier that is usually the final amplification stage in a device and is designed to give the required power output
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