单词 | knock rating |
释义 | > as lemmasknock rating knock rating n. (the determination of) the insusceptibility of a fuel to knock. ΘΚΠ society > occupation and work > materials > fuel > chemical fuel > [noun] > liquid > properties of cetane number1871 octane1931 octane number1931 knock rating1932 startability1933 octane rating1936 1932 Engineering 8 July 45/3 The marked effect of cylinder temperature upon the relative knock ratings of fuels was observed by Heron in 1928. 1933 Aircraft Engineering Aug. 177/1 To have an agreed scale of knock-rating for aviation fuels is no less important. 1959 B.S.I. News Aug. 14 Two draft ISO recommendations covering the motor and research methods of determining knock rating. < as lemmas |
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