语文书 / 例句 /

Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.是什么意思？

Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.

以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇.

相关词汇
menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation

menthol

n. 薄荷醇，薄荷脑；
例句
Inhalations of menthol may do the trick.
吸入薄荷醇或许可以起到作用。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；
例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

obtained

v. 获得( obtain的过去式和过去分词 )，买到，（规则、制度、习俗等）存在，流
例句
I had obtained the authentic details about the birth of the organization.
我已经掌握了有关该组织诞生的可靠的详细资料。

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；
例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

lemon

n. 柠檬，柠檬树，柠檬黄；adj. 柠檬色的；
例句
Boil the chick peas, add garlic and lemon juice...
把鹰嘴豆放在开水中煮，并加入大蒜和柠檬汁。

eucalyptus

n. 桉树，桉属植物；
例句
Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.
以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇.

oil

n. 油，石油，油画，燃油；vt. 给…加油；vi. 化成油；
例句
Several magnificent oil paintings adorn the walls.
几幅恢宏的油画装点着墙面。

via

prep. 经过，通过，凭借，取道；
例句
Access was via a narrow archway.
通道入口是一道狭窄的拱门。

cyclization

n. 环化（作用），成环；
例句
Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation, hydrogenation, cyclization with an overall yield of 8.05 %.
以苯甲酰氯为原料,经酰化, 还原, 环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%.

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。

catalytic

adj. 接触反应的，起催化作用的；n. 催化剂，刺激因素；
例句
...carbon molecules with unusual chemical and catalytic properties.
具有特殊化学性质和催化性的碳分子

hydrogenation

n. 加氢，氢化（作用）；
例句
The said catalyst was a good hydrogenation catalyst for adiponitrile.
Ni-Al-X 催化剂是己二腈加氢的优良催化剂.
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
The black clouds threaten a storm.
乌云预示暴风雨的来临。
Despite the heat, he'd swapped his overalls for a suit and tie.
尽管很热，他还是脱掉工作服换上了西装和领带。
...his pretty and complaisant wife.
他漂亮又温顺的妻子
You were right to do what you did, under the circumstances.
在这种情况下，你做的是对的。
We strode across the snowy fields.
我们大步流星地穿过雪封的旷野。
The President's foreign policy team are keeping a close eye on events.
总统的外交政策团队正密切关注事态发展。
Their eyesight is poor in low light.
光线很暗时他们视力不佳。
Remedy is a adscititious coating agent.
挽回的办法是外加涂层剂.
And that is where they are going to give birth, at the end of August.
那也是她们在八月底产仔的地方.
He was watching a football match...
他正在观看一场足球比赛。