名词
中文翻译：Unknown
同义词：
['真空管开关、真空管继电器器例句：1. This vacuum tube relay is used to control the speed of the motor.（这个真空管继电器用于控制电机的速度。）']
例句：
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1. This vacuum tube relay is used to control the speed of the motor.
这个真空管继电器用于控制电机的速度。
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2.The vacuum tube relay was a revolutionary invention in the field of electronics.
真空管继电器是电子领域的一项革命性发明。
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3.The vacuum tube relay was widely used in early television sets.
真空管继电器在早期电视机中被广泛使用。