名词
中文翻译：接触线
同义词：
['contact line', 'contact point']
例句：
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1. The scientist made a line of contact with the earth's magnetic field.
科学家与地球磁场建立了接触。
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2. The line of contact was used to connect the two circuits.
接触线用于连接两个电路。
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3. The line of contact is crucial for maintaining the stability of the power grid.
接触线对于保持电网的稳定性至关重要。