要是没有变压器来调节电压，远距离输送电力是不可能的。
Were there no transformers to switch the voltage, long-distance transmission of electricity would be impossible?
变压器的功用就是把电力从一种电压改变为加一种电压。
The function of the transformers is to change electric power from one voltage to another.
在电力系统中，变压器是实现电压变换、电能传输和分配的关键设备。
Transformer is the key instrument for voltage converting, power transmission and distribution in power system.
可内装电子变压器，适用不同输入电压。
Can load electronic transformer, suitable for different connection voltages.
因此，该类变压器的短路阻抗电压较高。
因此，该类变压器的短路阻抗电压较高。
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