| 词汇 | antiknock |
| 释义 | antiknock noun[ U ] uk /ˌæn.tiˈnɒk/ us /ˌæn.t̬iˈnɑːk/ a chemical that is added to the fuel of a car engine in order to make the fuel burn more effectively, so that the engine stops making a regular knocking sound（加入汽油中使燃烧更充分的）抗震剂，抗爆剂 Petroleum products especially when used as fuel antiknocking diesel downstream four-star gas gasohol gasoline hexane high-octane juice kerosene leaded LPG mineral oil non-leaded octane number oil petroleum jelly premium unleaded Related wordantiknocking Examples of antiknockantiknock This requires petrol of a high quality, which can only be obtained by the use of antiknock additives. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Alkylate is a premium gasoline blending stock because it has exceptional antiknock properties and is clean burning. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Antiknock agents allow the use of higher compression ratios for greater efficiency and peak power. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It functions as an antiknock agent by the action of the carbonyl groups. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Tetraethyllead previously was combined with gasoline as an antiknock agent. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Whereas the temperature and pressure of the combustion are largely determined by the engine, the composition can be controlled by various antiknock additives. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Improvements to gasoline itself decrease the need for antiknock additives. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ferrocene and its derivatives are antiknock agents added to the petrol used in motor vehicles, and are safer than the now-banned tetraethyllead. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Triacetin can also be used as a fuel additive as an antiknock agent which can reduce engine knocking in gasoline, and to improve cold and viscosity properties of biodiesel. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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