One kilowatt-hour, as the unit used in measuring and charging for electricity used. Also: a standard measure used in charging for telephone calls…
| 单词 | θ77972 |
| 释义 | the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > [noun] > one thousand watts > commercial unit (4) unit1886 One kilowatt-hour, as the unit used in measuring and charging for electricity used. Also: a standard measure used in charging for telephone calls… Kelvin1892 With lower-case initial. A name proposed (but little used) for: the kilowatt-hour, the ordinary commercial unit of electric energy. Now historical. kilowatt-hour1892 a unit of energy equal to that produced in one hour by a power of one kilowatt, viz. 3·6 million joules. Board of Trade unit1913 the commercial unit of electrical energy, equivalent to one kilowatt-hour of current; abbrev. B.T.U. |
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