名词
中文翻译：水银式电话交换机
同义词：
['mercury telegraph', 'mercury teletypewriter', 'mercury teleprinter']
例句：
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1.The mercury teleswitch is a crucial component in the electrical system.
水银式电话交换机是电力系统中至关重要的组成部分。
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2.The mercury teleswitch was designed to improve communication efficiency.
水银式电话交换机的设计目的是为了提高通信效率。
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3.The mercury teleswitch was replaced by the electronic switch in the new building.
新大楼中，水银式电话交换机被电子交换机所取代。