octane

/ˈɒk.teɪn/

Meanings

noun

辛烷，辛烷值。

Any of the eighteen isomeric aliphatic hydrocarbons (C8H18) found in petroleum, especially an iso-octane 2,2,4 trimethyl-pentane; they are used as fuels and solvents.

Examples :

"The car engine requires high octane fuel to prevent knocking and improve performance. "

这款汽车引擎需要高辛烷值的汽油，以防止爆震并提升性能。

Related Words

pentane noun

/ˈpɛnˌteɪn/ /pɛnˈteɪn/

戊烷

"The lab technician carefully measured out a small amount of pentane for the experiment. "

实验室技术员小心地量取了少量的戊烷用于实验。

solvents noun

/ˈsɒlvənts/ /ˈsɑːlvənts/

溶剂，溶解剂

"Example sentence: "To clean the paintbrushes, we need to use solvents that can dissolve the dried paint." "

为了清洗这些画笔，我们需要使用能够溶解干掉的颜料的溶剂。

hydrocarbons noun

/ˈhaɪdroʊkɑːrbənz/ /ˈhaɪdrəkɑːrbənz/

碳氢化合物，烃。

"Burning natural gas, which is mostly made of hydrocarbons, provides heat for many homes. "

燃烧天然气，它主要由碳氢化合物（烃）构成，为许多家庭提供热量。

knocking verb

/ˈnɒkɪŋ/ /ˈnɑkɪŋ/

敲，叩门。

"Someone is knocking on the front door. "

有人在敲前门。

especially adverb

/əˈspɛʃ(ə)li/

特别，尤其。

"My sister is very helpful, especially when it comes to organizing things. "

我妹妹很乐于助人，尤其是在整理东西方面。

petroleum noun

/pəˈtɹoʊliəm/

石油，原油。

"The factory used petroleum to fuel its machinery. "

这家工厂使用石油作为燃料来驱动机器运转。

aliphatic noun

/ælɪˈfætɪk/

脂肪族化合物

""Because it contains only carbon and hydrogen atoms arranged in a straight chain, that organic molecule is classified as an aliphatic." "

由于那个有机分子只含有碳和氢原子，并且它们排列成直链，因此它被归类为脂肪族化合物。

prevent verb

/pɹəˈvɛnt/

预防，阻止.

"I brush my teeth regularly to prevent them from turning yellow."

我定期刷牙是为了预防牙齿变黄。

improve verb

/ɪmˈpɹuːv/

提高，改善。

"Buying more servers would improve performance."

购买更多服务器可以提高性能。

requires verb

/ɹɪˈkwaɪəz/ /ɹɪˈkwaɪɹz/

要求，需要.

"The teacher requires students to submit their essays by Friday. "

老师要求学生们在星期五之前交他们的作文。

eighteen numeral

/ˈeɪ.tiːn/ /ˈeɪ(t).tin/

十八

"She turned eighteen years old last week. "

她上周满十八岁了。

performance noun

[pə.ˈfɔː.məns] [pɚ.ˈfɔɹ.məns]

表演，演出，表现

"the performance of an undertaking or a duty"

对某项事业或职责的履行