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R is tetramethylene, pentamethylene, or hexamethylene.是什么意思？

R is tetramethylene, pentamethylene, or hexamethylene.

R为四甲撑 、 五甲撑或六甲撑.

相关词汇
is pentamethylene or hexamethylene

is

vt.& vi. 是（be的三单形式；n. 存在；

pentamethylene

--

or

conj. 或，或者，还是，不然，否则，左右；prep. <古、诗>在…之前，比…更早；n. [纹章]黑金色、黑色；

hexamethylene

n. 环己；
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
But now the Hessian wakes, cutting off heads where he finds them.
现在黑森人醒了, 砍掉人们的头.
The game did not hest up until the second half.
比赛到下半场时才激烈起来.
Heterospory The production of two different sizes of spore: microspores and megaspores.
孢子异型:指植物产生两种大小不同的孢子: 小孢子和大孢子.
He believes that this equation connot be applied to heterogeneous flow.
他认为该式不能应用到非均质流型.
Any mathematical algorithms must be supplemented by heuristics.
任何数学算法必须由直觉来补充.
At this time , the field of semiconductor lasers is dominated by heterojunction devices.
目前, 在半导体激光器领域中,异质结激光器已占居支配地位.
His Ph . D . dissertation was on the design of double heterojunction AlGaAs semiconductor injection Laser.
博士 论文题目是关于双重异质结砷化铝镓半导体注入式激光器的设计.
We dance on the green, dine at the hermitage, and wander in the woods by moonlight.
我们在绿茵上跳舞, 在僻静的住所晚餐, 在月光下漫步于森林中.
Herpes simplex: Infection caused by herpes simplex virus.
单纯疹: 亦称感冒疮或发热性疹.由单纯疹病毒引起的感染疾病.
OBJECTIVE To establish a method for determination of hesperidin in Jinguo Effervescent Tablets by HPLC.
目的建立金果泡腾片中橙皮苷含量的测定方法.
Research has revealed him to be [ that he was ] a hermit.
调查结果表明他原是一位隐士.
Hesper giggled. No wonder you like my garden.
海茨帕笑了笑,“难怪你喜欢我的花园. ”
Objective order to assess addiction severity of heroin addicts.
目的评估自愿戒毒患者成瘾严重程度及其相关因素.
Methods: 90 patients with acute herpetic stomatitis were randomly divided into two groups.
方法: 将90例急性病毒性口炎患儿随机分成两组,治疗组用0.