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... 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
double bond
- n. a covalent bond in which two pairs of electrons are shared between two atoms
以上来源于: WordNet
柯林斯英汉双解大词典
double bond
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1.
N a type of chemical bond consisting of two covalent bonds linking two atoms in a molecule 双键
双语例句原声例句权威例句
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In the ethyne molecule, a double bond links together the two carbon atoms.
在乙烯分子中是由一个双键将两个碳原子连结在一起的。
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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。
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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。
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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。
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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。
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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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