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Methane and propane are alkanes.是什么意思？

Methane and propane are alkanes.

甲烷和丙烷是烷烃。

相关词汇
methane and propane are alkanes

methane

n. <化>甲烷，沼气；
例句
A methane molecule is composed of one carbon atom attached to four hydrogens.
甲烷分子由1个碳原子与4个氢原子构成。

and

conj. 和，与，而且，于是，然后，因此；
例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

propane

--
例句
Methane and propane are alkanes.
甲烷和丙烷是烷烃。

are

vi. （用于第二人称单复数现在时，第一、三人称复数现在时）是；n. 公亩（等于100平方米）；
例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

alkanes

烷类；
例句
The general uses of alkanes may be divided into three categories.
烷的一般用途可分为三个方面.
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
Mama's going to buy you a horse and cart.
妈妈给你买一匹拉着大车的马.
I know I shall feel for ever in her debt.
我知道我将会永远感激她。
This is to the Albanians that have this man.
这只是针对抓了这个人的阿尔巴尼亚人说的.
a tributary of the Columbia River
哥伦比亚河的一条支流
He is held in high esteem by colleagues in the construction industry...
建筑业的同行们都非常敬重他。
They'll work on till sunset.
他们将继续工作, 直到日落。
The duck laid ten eggs this month.
这只鸭子本月下了十个蛋。
Note HanZi tones, because of different tones means different expression.
注意憨子的音调, 因为不同的音调表达不同的含义.
In hospital they nursed me back to health.
在医院里他们对我进行治疗及护理，使我恢复了健康。
The bump stores great pressure. The machine tool can be operated with multi house and gunstock.
帮浦蓄压大,母机可作多组胶管与枪体操作.