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1.The design of the pantograph-contact line relation is crucial for the safe operation of the power transmission system.
接触线与导引线的设计对于电力传输系统的安全运行至关重要。
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2. In the construction of the new substation, the engineers carefully studied the pantograph-contact line relation to ensure its reliability.
在新变电站的建设中，工程师们仔细研究了接触线与导引线的关系，以确保其可靠性。
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3. The pantograph-contact line relation plays a vital role in maintaining the stability and safety of the power grid.
接触线与导引线关系在维护电网的稳定性和安全性方面起着重要作用。