reduced voltage

例句：

1. 1. The power supply has beenreduced to 50% of itsnormal voltage.
   电源已降至正常电压的50%。
2. 2. The new circuit design reduces thevoltage by 30%.
   新的电路设计将电压降低了30%。
3. 3. During theemergency, the power grid was temporarily reducedto a lower voltage level.
   在紧急情况下，电网被临时降低到较低的电压水平。