名词
中文翻译：Unknown
同义词：
['three-pole switch', 'three-pole relay', 'three-pole switcher']
例句：
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1. The three-pole switch is the most reliable option for this circuit.
这个电路中，三极开关是最可靠的选择。
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2. The technician quickly identified the problem and replaced the three-poleswitch.
技术人员迅速识别了问题并更换了三极开关。
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3. The old three-pole switch was no longer functioning properly, so we had to replace it.
旧的三极开关不再正常工作，所以我们不得不更换它。