名词
中文翻译：场放大器
同义词：
['field device', 'field transducer']
例句：
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1.The field amplifier is used to amplify the signal from the sensor.
场放大器用于放大传感器的信号。
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2. The field amplifier was designed to improve the quality of the audio signals.
场放大器被设计用来提高音频信号的质量。
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3. The field amplifier was used in the construction of the new communication system.
场放大器在新建通信系统的建设中被使用。