olefin

/ˈəʊləfɪn/

Meanings

noun

烯烃，烯类。

Any of a class of unsaturated open-chain hydrocarbons such as ethylene; an alkene with only one carbon-carbon double bond.

Examples :

"The plastic used to make this storage container is derived from an olefin called polyethylene. "

用来制造这个储物箱的塑料是由一种叫做聚乙烯的烯烃制成的。

Related Words

polyethylene noun

/ˌpɑliˈɛθəˌlin/ /ˌpɑliˈiθəˌlin/

聚乙烯，乙烯聚合物

"The recycling bin is made of polyethylene, a strong but lightweight plastic. "

这个回收箱是用聚乙烯做的，聚乙烯是一种坚固又轻便的塑料。

alkene noun

/ˈælkiːn/ /ˈɑːlkiːn/

烯烃

"The chemist explained that an alkene, unlike an alkane, contains at least one carbon-carbon double bond, making it more reactive. "

化学家解释说，烯烃和烷烃不同，它至少含有一个碳碳双键，这使得它的反应活性更高。

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。

carbon noun

/ˈkɑɹbən/

碳，炭。

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

铅笔的笔芯是用碳做的。

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。

container noun

/kənˈteɪnə/ /kənˈteɪnɚ/

容器，容纳器。

"The juice box is a small container for the children's drinks at school. "

这种果汁盒是孩子们在学校喝的饮料的小容器。

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。

derived verb

/dɪˈɹaɪvd/

获得，取得，源于。

"The student derived the answer to the math problem from the formula. "

这个学生从公式推导出了这道数学题的答案。

plastic noun

/ˈplæstɪk/

塑料，塑胶

"My new water bottle is made of plastic. "

我的新水瓶是塑料做的。

storage noun

/ˈstɔ.ɹɪd͡ʒ/

储存，存储。

"The storage of winter clothes in the attic is a family tradition. "

把冬天的衣服储藏在阁楼里，是我们家的传统。

ethylene noun

/ˈɛθəˌliːn/

乙烯

"Farmers use ethylene to help ripen fruits like bananas and tomatoes after they are picked. "

农民使用乙烯(也叫乙烯气体)来帮助采摘后的香蕉和西红柿等水果催熟。

called verb

[kɔld]

喊，叫。

"The teacher called out my name during attendance. "

点名的时候，老师喊了我的名字。