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- It has been shown by calculation that the dominant factor causing the difference in nT1 of CH and CH2 in vinyl group is its swinv in a plane perpendicular to the chain backbone. 乙烯基叔碳的nT_1值大于端碳,经计算表明,引起乙烯基叔、端碳的nT_1值不相等的主要因素是乙烯基在垂直于主链的平面上的摆动。
- A polycation carrying charges on the chain backbone:12,12 ionene bromide was synthesized,and its interaction and complexation formation with anionic surfactants:sodium alkylsulfates and sodium alkanesulfonates are studied. 合成了主链带电荷的阳离子高分子聚 N;N二甲基十二烷基溴化铵 (以下简称 12 ;12 - ionene) ;研究了它与阳离子表面活性剂之间的相互作用及复合物的形成过程 .
- These men are the backbone of the country. 这些人是国家的中坚力量。
- Standing up to bullies takes plenty of backbone. 勇敢地对付暴徒需有大无畏精神。
- The backbone is an articulate structure. 脊椎骨是一种关节相连的结构。
- Study on formation and structure of complexes for polycation carrying charges on the chain backbone and surfactants 主链电荷型高分子与表面活性剂复合物的形成及结构研究
- The chain has fallen foul of plants in the water. 链条已和水中的植物缠绕在了一起。
- She has a gold chain about her neck. 她在脖子的周围挂着一根金项链。
- The chain has run foul of some plants in the water. 铁链缠在水中的一些植物上。
- She wore a silver chain around her neck. 她脖子上戴着一条银项链。
- These two pieces of the chain hook together. 这两个链环套在一起。
- Agriculture used to be the economic backbone of this country. 农业曾是这个国家的经济支柱。
- He detached a link from a chain. 他从链子上拆下一个链环。
- The anchor chain took charge and ran out. 锚链失去控制而滑了出来。
- A pendant worn on a chain around the neck. 垂饰挂在脖子项链上的垂饰物
- He runs a chain of pasta restaurant. 他经营着一个面食餐馆联号。
- Have you the backbone to overcome the hard luck? 你有没有勇气战胜厄运?
- He is an Irishman to the backbone. 他是个十足的爱尔兰人。
- I detached my watch from the chain. 我从表链上解下手表。
- As he fell, he caught hold of a hanging chain. 当他跌倒时，便往一条悬挂的绳子抓去。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
