| 释义 |
double bond ˈdʌblbɔnd 短语⁵⁰⁷⁷⁸
基本英英例句例句
n.双键
Noun:
a covalent bond in which two pairs of electrons are shared between two atoms用作名词One atom of oxygen is linked to the nitrogen atom by adouble bond.一个氧原子以双键与氮原子相连。
Compounds containing two double bonds are called dienes.包含两个双键的化合物叫做二烯烃。 And by that what we mean is that they're absolutely identical, and it turns out that this here is not a double bond, it's not a single bond either, it's actually something in between.
这意味着它们是绝对完全相同的，实际情况应该是这不是一个双键，这也不是一个单键，而是介于两者之间的状态。163
The fact that the modified monomer react with the double bond of SBS were found through infrared spectral of SBS and its grafting copolymer.
通过对 SBS和接枝共聚物进行红外光谱分析发现接枝改性单体与 SBS的双键发生了显著的接枝共聚反应。 cnki
The thermochemical reaction under sunlamp light also produces the double bond migration product4, 18%.
日光灯照明下加热还可得到双键迁移产物418%。 cnki
The effect of the ratio of hydrogen peroxide to double bond of allyl group, reaction temperature and reaction time on epoxidation was investigated.
考察了双氧水与烯丙基双键配比、反应温度和反应时间对环氧化反应的影响。 fabiao
The type of cyanate ester resin CE and its modification by thermosetting, thermoplastics, rubber elastomer and unsaturated compound with double bond are reviewed.
综述氰酸酯树脂 CE的种类及热固性树脂、热塑性树脂、橡胶弹性体、含不饱和双键化合物等对 CE树脂的改性。 cnki
All right, so let's think of a more complicated example of having a double bond, and maybe a more interesting example, and this is talking about benzene.
好了，让我们来看关于双键的,一个更复杂的例子，也许是更有趣的例子，我们要讨论苯环。163
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。163
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。163
Depending upon reaction conditions, the product may be a polyketone formed by addition polymerization of the ketene double bond.
随着反应条件的不同，产物可以是由烯酮的双键加成聚合得到的聚酮。 kuenglish
In this case we have a double bond between a and b, and in this case we have it between b and c.
在这种情况下，我们在， A，与， B，之间有一个双键，而在这种情况下，双键在， B，与， C，之间。163
Monounsaturated fatty acid MUFA is a sort of fatty acids, including a double bond in its carbon chain.
单不饱和脂肪酸 MU FA是脂肪酸的一种，其碳链上只有一个双键。 chemyq
Or if we look at how strong it is, it's actually stronger than a single bond, but weaker than a double bond.
或者如果我们看键的强度的话，它实际上比单键更强，而比双键更弱。163
So let's take a look at what actually happens if we're talking about a carbon- carbon double bond, we're going to have a double bond.
让我们来看一看碳碳双键的情况,例如在乙烷里，我们有个双键。163
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。163
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。163
The fibres treated with the silane with. double bond has middle surface free energy.
用带双键硅烷处理的玻纤有中等的表面自由能。 cnki
The result shows that hydrogenation rate of partial double bond can exceed 95% on suitable conditions.
结果表明：采用适当的试验条件，可使苯乙烯类热塑性弹性体部分双键氢化率达95%以上。 cnki |