An efficient bulb may lighten the load of power stations.
节能灯可减轻发电站的负荷。
It USES 90% less power than an old-type bulb and has an average life of 25, 000 hours.
它比老式灯泡少消耗90%的电力,而且平均寿命达到25000小时。
It USES 90% less power than an old-type bulb and has an average life of 25,000 hours.
它比老式灯泡少消耗90%的电力,而且平均寿命达到25000小时。
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