| 单词 | kilowatt-hour |
| 释义 | > as lemmaskilowatt-hour e. Used as the second element, representing ‘for one hour’, in the names of some units of measurement, as ampere-hour, horsepower-hour, kilowatt-hour, man-hour (see under the first element). kilowatt-hour kilowatt-hour n. a unit of energy equal to that produced in one hour by a power of one kilowatt, viz. 3·6 million joules. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > [noun] > one thousand watts > commercial unit unit1886 Kelvin1892 kilowatt-hour1892 Board of Trade unit1913 1892 B. Smith & W. H. H. Hudson Arithm. for Schools (new ed.) 147 This is a Kilowatt-hour and is equivalent to 3.6 Megajoules. 1905 Daily Chron. 20 July 6/4 If he uses this 300 kilowatts for every minute he is working throughout the quarter, say..720 hours, he will use 300 × 720 kilowatt hours or ‘units’. 1951 B. L. Goodlet Basic Electrotechnics i. 11 Electrical energy is sold commercially by the kilowatt-hour—1000 watts acting for 1 hour. 1965 J. B. Owens & P. E. Sanborn Fund. Electr. vii. 366 If a lighting circuit uses 2000 watts for a period of one hour, the amount of electric energy consumed is 2 kilowatt-hours. < as lemmas |
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