名词
中文翻译：群线开关
同义词：
['group switch', 'grouping switch']
例句：
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1.The group line switch is used to control the flow of power in a group of electrical devices.
群线开关用于控制一组电气设备的电力流动。
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2.The group line switch was designed to improve the reliability and efficiency of the system.
群线开关被设计用来提高系统的可靠性和效率。
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3. The group line switch is essential for maintaining the integrity of the electrical grid.
群线开关对于维护电网的完整性至关重要。