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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
Hew out of the West branch manager Huang said.
满堂红西槎分店黄店长如是说.
We discuss the pathogenesis of herpetic uveitis.
初步探讨了单疱性前葡萄膜炎的发病机理.
The average heterozygosity of offspring and polymorphic information content ( PIC ) etc were lower than those of their parents.
子代的平均期望杂合度(He) 、平均观测杂合度 ( Ho)和平均多态性信息含量(PIC ) 等指标均低于亲代.
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.
The key step was a substrate controlled asymmetric heteroatom conjugated addition.
关键反应为底物控制的不对称杂原子共轭加成反应.
In this paper, a new centerline extraction algorithm based on Hessian Matrix is proposed.
提出了一种基于Hessian矩阵的中心路径提取算法.
He was already beginning to display quiet symptoms of heterodoxy.
当时,他已开始暗暗流露出叛离正统的迹象.
Methods: Nine heterozygous mutation carriers and nine healthy controls were investigated.
方法: 调查9名杂合子突变携带者和9名健康对照者.
Results Heterotopic heart transplantation could be developed by microsurgery scuccessfully.
结果应用显微外科技术可以建立大鼠异位心脏移植模型.
The newly hewn steps were too narrow to tread in comfort.
新砌的石级窄窄的,搁不下整脚.
There are Hertz, avis , Budget, National and several other small companies.
有Hertz, avis, Budget, National及其他几个公司.
the rough-hewn features of his face
他那饱经沧桑的脸
In a moment Hesper stood before him.
不一会儿,海淡帕出来站在他的面前.
The heron flapped slowly off across the lake.
那白鹭振翅向湖对岸慢慢飞去.