名词
中文翻译：Unknown
同义词：
['B-stage amplifier', 'B-stage power amplifier']
例句：
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1. The B-amplifier is used to amplify the signal from the microphone.
B放大器用于放大麦克风的信号。
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2. In audio engineering, the B-amplifier is responsible for boosting the low end of the sound spectrum.
在音频工程中，B放大器负责提升声音频谱的低频部分。
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3. The B-amplifier was designed to improve the quality of audio signals.
B放大器被设计用来提高音频信号的质量。