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。
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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