| 词汇 | octane-number |
| 释义 | octane number noun[ C ] uk /ˈɒk.teɪn ˌnʌm.bər/ us /ˈɑːk.teɪn ˌnʌm.bɚ/(alsooctane rating) a number showing the quality of petrol by representing how well and with how much power it can make an engine work辛烷值 Engineering - mechanical -engined air-cooled artificer automative bionics dolly drive shaft engage go on horsepower mechanical mechanize neutral oilcan override stress test tick over tune (something) up unmechanized valve You can also find related words, phrases, and synonyms in the topics: Petroleum products especially when used as fuel Examples of octane numberoctane number A research octanenumber of 65 and volatility were low compared with modern fuels but probably suitable when considering the design of the flathead engine. Fuel consumption increases with every unit reduction of octanenumber. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The octanenumber of any additional unleaded regular grade was left for member states to fix. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The way to increase the octanenumber is obviously to put in petroleum additives such as tetraethyl lead and tetramethyl lead. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The lead additive in petrol provides the octanenumber needed by vehicle engines. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The main decisions required were as to the number of grades of unleaded petrol and their octane number, and the precise timing for introducing the changes. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The octanenumber is an empirical measure of the resistance of gasoline to combusting prematurely, known as knocking. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The octanenumber of the alkylate depends mainly upon the kind of alkenes used and upon operating conditions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Both of these processes raise the octanenumber of the substance. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alkylation processes transform low molecular-weight alkenes and iso-paraffin molecules into larger iso-paraffins with a high octanenumber. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The higher the octanenumber, the more compression the fuel can withstand before detonating (igniting). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Where the octanenumber is raised by blending in ethanol, energy content per volume is reduced. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The degree of branching affects characteristics, such as the octanenumber or cetane number in petroleum chemistry. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Isobutane is primarily used by refineries to enhance (increase) the octanenumber of motor gasoline. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The research octane numbers in this specification have remained unchanged with the reduction of the lead alkyl content. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 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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