So, if we take a look at what a single bond is, and let me grab some molecules here.

如果来我们看一下单键，让我拿个分子。

Remember, every time we have two electrons that are being Shared, that's a single bond.

还记得，每次我们有两个电子被共用，我们就有了一个单键。

We would predict to see a single bond between lithium, and it turns out that's what we see.

我们可以预测在锂中会看到一个单键，而实际上确实是这样的。

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。

Saturated is a single bond between carbon atoms in the fatty acid . Unsaturated is the double bond.

不同的碳长度脂肪酸和不同数量的双结合给脂肪以独特的特性。

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。

OK, then it says draw a single bond from each surrounding atom to the central atom, and subtract two valence electrons.

后将中心原子与其相邻原子之间，连上单键，然后减掉2个价电子。

so you can see that there is going to be two sets in antibonding, three sets in bonding for a net of one, giving us the single bond.

因此你能看到,反键轨道上有两组，三组成键，得到一组净成键，所以成的是单键。

The organic group further comprises at least one activating group on at least one carbon atom of the C-C single bond or double bond.

所述有机基团进一步包括至少一个在所述C-C单键或双键的至少一个碳原子上的活性基团。

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。

The variation of electronic structure leads to the increase of single bond radius and atomic volume and other changes of physical properties.

电子结构的转变是导致原子单键半径增大和体积增加及其他物理性质发生改变的根本原因。

The differences in structural type and contents of carbon-oxygen single bond between the contact black and the furnace black are very evident.

研究结果指出，接触法炭黑与氧化炉法炭黑的表面在碳氧键合结构形式及含量上有很大的差异；

When we have just a single bond in them molecule, you have all the free rotation you want, you can just spin it around, there's nothing keeping it in place.

当我们在分子力只有一个单键时，你可以随意旋转，你可以让它转起来，没有什么东西能固定住它。

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。

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。

During the ozone oxidation process of furnace black, the carbon-oxygen single bond can be formed mainly, but further oxidation to the carbon-oxygen double bond is very difficult.

炉法炭黑表面臭氧化过程中主要生成的是表面碳氧单键结构，进一步氧化为双键的程度很低。

So, for example, down here I wrote that it was n 2 and that it was h 2, but when I re-wrote the molecules up here, you saw that it's an h h single bond where it's a nitrogen-nitrogen triple bond.

比如，在这下面我写的是氮分子2,而这个是氢分子，但我在上面把这些分子的形式改写了，大家可以看到,这是一个氢与氢之间的单键，含一个氮与氮之间的三键。

Whereas in molecular orbital theory, what I'm telling you is instead we understand that the electrons are spread all over the molecule, they're not just associated with a single atom or a single bond.

而在分子轨道理论里，我要告诉你们的时，我们任为电子分布在整个分子中，它们不仅仅是和，一个原子或者一个键有关。

Is there a human gene affecting our propensity to bond with a single mate?

是否存在某一人体基因，影响着我们维持单配偶关系的倾向性呢？

Shifting every bond by a single partner was beyond Rosetta's abilities, but it's something a human can do trivially.

只有一个伙伴的情况下要想把每一个键都搬动，这不是罗塞塔的能力范围，但人类却可以胜任。

Portugal and others are now cowering in fear. This Bond, it seems, is the agent of sinister Anglo-Saxon market forces seeking to destroy Europe's single currency.

葡萄牙和其他国家现在也吓得哆嗦，邪恶的盎格鲁撒克逊(注3)的市场力量一直试图摧毁欧洲的单一货币，这位“邦德”似乎就是其代理人。

While I love and appreciate every single one of my friends, sometimes I wish they share some of my passions, so we could bond over them.

当我喜欢或欣赏我的每一个朋友时，我希望他们能够分享我的情感，使我们的友谊因此而更加深厚牢固。

But while stockmarkets were celebrating, the corporate-bond market saw 35 defaults, the largest number of non-payers in a single month since the Depression, according to Moody’s.

尽管股市曾经欣欣向荣，债券市场有35家企业违约，按穆迪的说法，这是大萧条以来非纳税人单月违约最大值。

In other words, they flipped a switch, which allowed them to change the electrical conductivity of the silicon without making or breaking a single chemical bond within the surface.

或者说，他们扳动了一个开关，改变了硅的电导率，而不需破坏表面上的任何化学键。

You also erode your bond with your internist, who is the single most important bulwark against disease in your life.

你可能还会损害免疫细胞，它们可是身体抵御疾病入侵最重要的壁垒。

So this is the energy of a single ionic bond.

这就是单离子键的能量。

While eI love and appreciate every single one of my friends, sometimes I wish they share someof my passions, so we could bond over them.

尽管我喜欢并欣赏我的每一个朋友，有时我希望他们能通过分享我的热情，并因此而和他们粘合在一起。 。

Peroxide: Any of a class of chemical compounds in which two oxygen atoms are linked by a single covalent bond.

过氧化物：任何由两个氧原子以单个共价键相互结合在一起的一类化合物。