| 单词 | octane number |
| 释义 | > as lemmasoctane number octane number n. a number indicating the anti-knock properties of a motor or aviation fuel, equal (for numbers below 100) to the percentage by volume of isooctane in an isooctane/n-heptane mixture of equivalent performance, or (for numbers above 100) to the number of millilitres of tetraethyl lead per gallon of isooctane required to give an equivalent performance; cf. research octane number n. at research n.1 Compounds 3. ΘΚΠ society > occupation and work > materials > fuel > chemical fuel > [noun] > liquid > properties of cetane number1871 octane1931 octane number1931 knock rating1932 startability1933 octane rating1936 1931 Automobile Engineer Aug. 308/3 Lead tetra-ethyl is the only other practical alternative to cracked spirits as a means of raising the anti-knock value of motor spirit to an octane number of 70 or more. 1972 D. J. Patterson & N. A. Henein Emissions from Combustion Engines ii. 63 The octane number of the fuels on the market is about 94 for regular gasoline and 100 for premium gasoline. 1975 Chem. Week (Nexis) 24 Sept. On the plus side: methanol is a high-octane fuel. Its RON (research octane number) has been variously reported between 106 and 115. 1992 Sci. Amer. Apr. 6/1 Octane numbers are very deceptive;..the power goes up much faster than the numbers. Triptane, with a power output of 50 percent more than 100 octane fuel, would actually have an octane number of about 110. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。