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alkenes

/ˈælkiːnz/

Meanings
noun

烯烃，烯类。

An unsaturated, aliphatic hydrocarbon with one or more carbon–carbon double bonds

Examples :

"Chemists study alkenes because these molecules are important building blocks for making plastics and other materials. "
化学家研究烯烃，因为这些分子是制造塑料和其他材料的重要构成单元。
compound substance chemistry fuel

Related Words

Illustration hydrocarbon

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。

Illustration building

building noun

/ˈbɪl.dɪŋ/

建造，建设。

"The building of the bridge will be completed in a couple of weeks."

这座桥的建造工程将在几周内完工。

Illustration important

important adjective

/ɪmˈpɔːtənt/ /ɪmˈpɔɹtənt/

重要，关键，至关重要。

"It is very important to give your daughter independence in her life so she learns from experience."

给予女儿生活上的独立性，让她从经验中学习，这一点至关重要。

Illustration unsaturated

unsaturated adjective

/ˌʌnˈsætʃəˌreɪtɪd/ /ʌnˈsætʃəˌreɪtɪd/

未饱和，不饱和。

"The sugar water is still unsaturated; I can add more sugar and it will dissolve completely. "

这糖水还未饱和，我可以再加些糖，它也能完全溶解。

Illustration carbon

carbon noun

/ˈkɑɹbən/

碳， 炭。

"The pencil's lead is made of carbon. "

铅笔的笔芯是用碳做的。

Illustration because

because adverb

/bɪˈkɒz/ /biˈkɔz/

因为，由于。

"I went to the park because the weather was nice. "

因为天气很好，所以我去了公园。

Illustration plastics

plastics noun

/ˈplæstɪks/

塑料，塑膠。

"Many toys are made of plastics because they are durable and easy to mold. "

很多玩具都是用塑料做的，因为它们很耐用而且容易塑形。

Illustration aliphatic

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。

Illustration double

double noun

/ˈdʌb.əl/

双倍，两倍

"My brother's allowance is a double of mine. "

我弟弟的零花钱是我的两倍。

Illustration molecules

molecules noun

/ˈmɑːlɪkjuːlz/ /ˈmɒlɪkjuːlz/

分子

"Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom and a chlorine atom."

氯化氢是双原子分子，它由一个氢原子和一个氯原子构成。

Illustration chemists

chemists noun

/ˈkɛmɪsts/

化学家，化学工作者

"The chemists at the pharmaceutical company are working to develop a new medicine. "

这家制药公司的化学家们正在努力研发一种新药。

Illustration materials

materials noun

/məˈtɪəɹɪəlz/ /məˈtɪɹi.əlz/

材料，原料。

"Asphalt, composed of oil and sand, is a widely used material for roads."

沥青，由石油和沙子组成，是一种广泛使用的道路材料。