降压变压器低压AC电源提供照明，仪器仪表和其他使用交流电在一个较低的电压的电路。
Step down transformers provide low voltage AC power for lighting, instruments and other circuits that use alternating current at a lower voltage.
应该假设任何充油电气设备(变压器或其他电器设备)的不断含有多氯联苯将进行调整。
It should be assumed that any oil-filled electrical equipment (transformer or other electrical equipment) that ever contained PCBs will be regulated.
电气技师维护，测试，重建和修复电动机，变压器，开关柜及其他电器设备。
Electrical mechanics maintain, test, rebuild and repair electric motors, transformers, switchgear and other electrical apparatus.
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