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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。
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。
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。
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。
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Anyway, that's a yuppie joint.
无论如何, 雅皮愿意去那儿.
What he felt was more akin to pity than love.
他感受到的更像怜悯，而不是爱。
How can millions of dollars go astray?
几百万美元怎么可能不翼而飞呢？
Milk from the mother's breast is a perfect food for the human baby.
母乳是宝宝的最佳食品。
This attenuates the offside signal.
这样做会降低来自四周的信号.
To stay fit off season, I play tennis or football.
为了在休赛期间保持状态，我常打网球或踢足球。
Persistent damage or inadequate healing may lead to chronic lameness.
反复受伤或治疗不当可导致长期跛足。
The side tracks off the tarred road were rutted and uneven...
柏油路面两边的辅道上布满车辙，凹凸不平。
The president has been huddling with his most senior aides.
总统一直在和最高层助理开私下碰头会。
Etanercept should be discontinued if a blood dyscrasia is evident.
血液恶液质,依那西应被停.