名词
中文翻译：四通换向器
同义词：
['four-way switch', 'four-wayjacking']
例句：
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1.The four-way jack is usedto connect the power lines in a workshop.
四通换向器用于连接车间内的电源线。
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2. The technicians used thefour-way jack to disconnectthe circuit breaker.
技术人员使用四通换向器断开了断路器。
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3. The four-way jack was essential for safelyaccessing the electrical panel.
四通换向器对于安全访问配电盘至关重要。