Jisho

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こうりつ 効率
Noun
1. energy efficiency
Wikipedia definition
2. Energy conversion efficiencyEnergy conversion efficiency (η) is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The useful output may be electric power, mechanical work, or heat.
Read “Energy conversion efficiency” on English Wikipedia
Read “エネルギー効率” on Japanese Wikipedia
Read “Energy conversion efficiency” on DBpedia

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