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Electrical power line and cable workers construct, maintain and repair overhead and underground electrical power transmission and distribution systems.
电源线和电缆工人建造，维护和修复架空线和地下电力传输和配电系统。
The railway overhead line-pantograph system is one of the most important components of the electrical locomotive, which is the only way to provide power for the electrical locomotive effectively.
弓网系统是电力机车的重要组成部分之一，是给电力机车提供动力的唯一有效途径。
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