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单词 power amplifier
释义

Definition of power amplifier in English:

power amplifier

noun

  • An amplifier designed to increase the power of an electrical signal to the level required to drive a device or circuit, especially a speaker.

Origin

1920s; earliest use found in Journal of the Institute of Electrical Engineers.

Definition of power amplifier in US English:

power amplifier

noun

  • An amplifier designed to increase the power of an electrical signal to the level required to drive a device or circuit, especially a speaker.

Origin

1920s; earliest use found in Journal of the Institute of Electrical Engineers.
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更新时间：2025/6/20 3:39:51