4827| 5
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這樣計(jì)算對(duì)嗎。關(guān)于功率與功率因數(shù)與電費(fèi),算的對(duì)嗎 |
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點(diǎn)評(píng)
我這里是:功率因數(shù)低于0.90會(huì)被供電局罰款
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