heptane

/ˈhɛpteɪn/ /ˈhɛptæn/

Meanings

noun

庚烷

Any of the nine isomers of the saturated aliphatic hydrocarbon C7H16, obtained from petroleum, especially n-heptane (CH3(CH2)5CH3)

Examples :

"In chemistry labs, heptane is sometimes used as a solvent to dissolve nonpolar substances. "

在化学实验室里，庚烷有时用作溶剂来溶解非极性物质。

Related Words

hydrocarbon noun

/ˈhaɪdroʊˌkɑːrbən/ /ˈhaɪdrəˌkɑːrbən/

碳氢化合物，烃。

"Gasoline is a hydrocarbon fuel used in many cars. "

汽油是一种碳氢燃料，很多汽车都在使用。

saturated verb

/ˈsætʃəˌreɪtɪd/ /ˈsætʃəˌreɪtəd/

浸透，浸湿。

"After walking home in the driving rain, his clothes were saturated."

在暴雨中走回家后，他的衣服全都湿透了。

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。

sometimes adjective

/ˈsʌmtaɪmz/

以前的，之前的。

"My sometimes neighbor, a retired teacher, still visits the school occasionally. "

我以前的邻居，一位退休教师，偶尔还会去学校看看。

solvent noun

[ˈsɒlvənt]

溶剂，溶解剂。

"Water is a common solvent that can dissolve sugar. "

水是一种常见的溶剂，可以溶解糖。

isomers noun

/ˈaɪsəmərz/ /aɪˈsɒmərz/

同分异构体，异构物。

"Glucose and fructose are isomers; they both have the formula C6H12O6, but their atoms are arranged differently. "

葡萄糖和果糖是同分异构体；它们的分子式都是C6H12O6，但是原子排列方式不同。

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。

obtained verb

/əbˈteɪnd/

获得，取得。

"She obtained her driver's license after passing the driving test. "

她通过了驾驶考试，获得了她的驾照。

chemistry noun

/ˈkɛm.ɪ.stɹi/

化学，化学科学。

"The chemistry class focused on how different elements combine to form new substances. "

化学课的重点是不同的元素如何结合形成新的物质。

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。

substances noun

/ˈsʌbstənsɪz/ /ˈsʌbstənzɪz/

物质，材料，东西。

"The science class experimented with different substances to see how they reacted to heat. "

科学课用不同的物质做实验，观察它们对热的反应。

dissolve noun

/dɪˈzɒlv/ /dɪˈzɑlv/

叠化，淡入淡出.

"The dissolve between the shot of the teacher writing on the board and the shot of the students' attentive faces was smooth and effective. "

老师在黑板上书写的镜头和学生专注表情的镜头之间，使用了流畅而有效的叠化效果。