名词
中文翻译：开关管
同义词：
['switching element', 'switching device例句：1. The new switching tube has significantly improved the efficiency of the power supply system.（新推出的开关管显著提高了供电系统的效率。）']
例句：
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1. The new switching tube has significantly improved the efficiency of the power supply system.
新推出的开关管显著提高了供电系统的效率。
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2. The engineer carefully inspected the switching tube before installing it in the circuit.
工程师在安装前仔细检查了开关管。
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3.The switching tube was used to control the speed of the motor during operation.
开关管用于控制电机运行过程中的速度。