| 单词 | octane rating |
| 例句 | Most vehicles use fuel with an octane rating of 87; that’s typically the lowest rating. Perspective | Hints From Heloise: This number is a gas! 2017-10-30T04:00:00Z That legal decision allowed it to require businesses to post octane ratings on gas pumps. McDonald’s Former C.E.O. Pays for a Workplace Scandal 2023-01-10T05:00:00Z Isooctane is the common name of the isomer of C8H18 used as the standard of 100 for the gasoline octane rating: Chemistry 2019-02-14T00:00:00Z Read the label inside the cover of your car’s gas tank — it will tell you the minimum octane rating of the fuel you should use. Gas-saving tips and tricks for Southern California road trips this Fourth of July 2022-06-29T04:00:00Z E15, often sold at the pump as Unleaded 88, for its octane rating, can safely be used in all cars, trucks and SUVs from 2001 on. EXPLAINER: Why Biden is allowing more ethanol in gasoline 2022-04-12T04:00:00Z When he fills his tank, does he insist on verifying the fuel’s octane rating? Opinion | On the ‘big lie,’ Glenn Youngkin wants to have it both ways 2021-10-08T04:00:00Z “Ali, do we need 91 or 95?” she asked him, referring to the two different octane ratings of unleaded gas sold in the kingdom. A Moment to Savor: A Saudi Woman Rejoices as Driving Ban Ends 2018-06-23T04:00:00Z His work also led to new methods to convert “straight-chain” hydrocarbons into molecules with branched structures, which resulted in higher octane ratings and cleaner-burning fuel. George Olah, Nobel-winning chemist who studied carbon compounds, dies at 89 2017-03-13T04:00:00Z Gasoline sold in the United States usually is available in three octane ratings: Regular gas is typically 87 octane, midgrade is 89 and premium might be 91 to 93. Don’t Waste Money on Premium Gas if Your Car Is Made for Regular 2016-09-22T04:00:00Z Even at current octane ratings, premium is proving more appealing to manufacturers. U.S. Demand for Premium Gas Is Going Up. Why? Lead was added to gasoline in the early 1920s to help reduce engine knocking and boost octane ratings. Silent menace: Lead still a big problem in Lancaster County 2015-03-21T04:00:00Z That is a lower octane rating than you find at gas stations -- most are at least 87 -- but traditional crude oil refining uses several steps to reach that mark. Turning wood into oil, in two simple steps 2011-10-18T20:11:22Z That's why higher octane ratings are better for high-performance cars, which need higher compression to generate more power. Gasoline additives probably don't affect fuel's environmental impact very much 2011-03-07T23:57:01Z But it is the quality of the fuel, not its octane rating, that matters. Don’t Waste Money on Premium Gas if Your Car Is Made for Regular 2016-09-22T04:00:00Z Currently, regular U.S. gas gets an 87 octane rating, while premium gets 93. U.S. Demand for Premium Gas Is Going Up. Why? |
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