... 双键 复分解 闭环反应 苯并吡喃 氨基酸 肽 内酰胺 磺酰胺 磷杂环化合物 [gap=475]Keywords】: ORGANIC SYNTHESIS,DOUBLE BONDS,DOUBLE DECOMPOSITION,RING CLOSURE REACTION,BENZOPYRAN,AMINO ACID,PEPTIDE,LACTAM...
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... 广州 guangzhou (captial of guangdong province) 【化学】双键。 double bond 苯双键 benzene double bonds ...
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double bond migration [物化] 双键移位
isolated double bond 孤立双键 ; 隔离双键
endocyclic double bond 桥环双键 ; 内分泌学
internal double bond 内双键 ; 内双链
double bond index 双键指数 ; 双键率
nonpolar double bond 非极性双键
以上来源于: WordNet
N a type of chemical bond consisting of two covalent bonds linking two atoms in a molecule 双键
So really, you can not ever rotate a double bond, it makes your molecule very rigid.
实际上,你不能转动一个双键,它使得你的分子很坚固。
They react by adding other chemical agents at the double bond to form derivatives or polymers.
这些化合物的最大用途在于双键与其它化学物质的反应。
So if we look at its length, it's actually shorter than a single bond, but longer than a double bond.
因此如果我们看它的键长的话,它实际上比单键更短,却比双键更长。
So if we look at its length, it's actually shorter than a single bond, but longer than a double bond.
因此如果我们看它的键长的话,它实际上比单键更短,却比双键更长。
And we find the same thing for these two atoms here, it's not actually a double bond, it's somewhere between a single bond and a double bond.
而且我们发现这两个原子的情况是一样的,它其实不是一个双键,而是介于单键与双键之间的。
And something that we'll see later on is that triple bonds, for example, are going to be stronger than a corresponding double bond or a corresponding single bond.
而我们以后还会看到三键,举例来说,应该更强,相较于相应的双键,或者相应的单键来说。
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