line transformer

例句：

1. 1. The line transformer is used to convert alternating current (AC) into direct current (DC).
   线路变压器用于将交流电转换为直流电。
2. 2.The transformer is essential for power transmission and distribution systems.
   变压器对于电力传输和分配系统至关重要。
3. 3. The transformer is designed to withstand high voltages and provide stable power output.
   变压器设计用来承受高电压，并提供稳定的电力输出。