名词
中文翻译：可变电阻臂
同义词：
['variable resistor arm', 'variable resistancearm']
例句：
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1. The potentiometer is used to adjust the brightness of the display.
可变电阻用于调整显示器的亮度。
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2. The engineer adjusted thepotentiometer to optimize the performance ofthe system.
工程师调整了可变电阻以优化系统的性能。
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3. The potentiometerwas responsible for controlling the speed of themotor.
可变电阻负责控制电机的速度。