名词短语
中文翻译：Unknown
同义词：
['single pole', 'single throw switch']
例句：
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1.The single-pole single throw switch is used to control the flow of electricity.
单极单投开关用于控制电流的流动。
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2.The engineer replaced the old single-pole single throw switch with a new one.
工程师用一个新的单极单投开关替换了旧的。
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3. The single-pole single throw switch was designed to be easy to use and maintain.
单极单投开关设计得易于使用和维护。