单词 | pico-watt |
释义 | > as lemmaspico-watt pico-watt n. Brit. /ˈpiːkə(ʊ)wɒt/ , /ˈpʌɪkə(ʊ)wɒt/ , U.S. /ˈpikoʊˌwɑt/ , /ˈpikəˌwɑt/ , /ˈpaɪkoʊˌwɑt/ , /ˈpaɪkəˌwɑt/ ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > [noun] > watt > small unit pico-watt1967 1967 D. H. Hamsher Communication Syst. Engin. Handbk. xvi. 10 The noise power measurement without any weighting of the frequency response of the instrument is expressed usually in picowatts (10−12 watt = pw). 1977 Sci. Amer. Feb. 62/2 At the earth station the 30-metre dish antenna collects a scant three picowatts of energy and feeds it into a low-noise receiver. 1990 R. L. Forward Rocheworld 273 That brain still used a significant number of picowatts per thought. < as lemmas |
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