A linear power amplifier is used, which is mainly made up of an operation amplifier and a Darlington transistor because of the low power range.是什么意思_A linear power amplifier is used, which is mainly made up of an operation amplifier and a Darlington transistor because of the low power range.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句