这三种成分相互交织，直接形成共价键。
These three components are interwoven, and direct covalent linkages.
配位共价键是其中两个键合电子均来自该键所涉及的原子之一的键。
A coordinate covalent bond is one where both bonding electrons are from one of the atoms involved in the bond.
共价催化涉及底物与活性位点中的残基或与辅因子形成瞬时共价键。
Covalent catalysis involves the substrate forming a transient covalent bond with residues in the active site or with a cofactor.
这是平均共价，它是极性共价。
所以你看得出极性共价就是，趋向离子键的。
So you can see that polar covalency is a tendency towards ionic bonding.
但对于共价键就没这么简单了。
而是用的同核，嗯，这是完全共价的。
在共价键联中，原子共有电子。
他创造了共价键这一概念。
特别地，今天我们要专门讲一讲共价键。
So specifically, today we're going to talk about covalent bonds.
这证明有每摩尔435焦的，的共价能。
And this turns out to have a bond strength of 435 kilojoules per mole.
抗体能通过共价键结合在脂质体颗粒上。
Antibody can be linked to liposome particles by covalent binding.
他有许多著名的发现，其中一个便是共价键。
He's famous for a lot of things, one of which is covalent bonding.
在共价键中被两个原子所共有的一对电子。
A pair of electrons Shared between two atoms in a covalent bond.
我想象它们的样子，通过共价键结合的分子链。
I'm imagining something like, covalently bonded chains that have links between them.
然后鲍林更进一步，说这是一个完全的共价成分。
And so Pauling went further and said this is the purely covalent component.
需进一步深入研究方能解决共价键的起源问题。
Further study is needed before the origin of the covalent bond can be considered a settled question.
这是氢的同原子的共价能,在纯氢中，我们有完美的共价键。
This is the homonuclear bond energy for hydrogen in pure hydrogen. There we have perfect covalency.
如果我用这个测量表测氢分子，完全平均共价的分子。
If I look at a homonuclear molecule such as molecular hydrogen, this is perfect sharing.
小小的质子具有很高的电负性，在上述分子中，质子共价结合Ng。
The tiny proton is highly electronegative, and it bonds covalently to Ng in these molecules.
是一个完全的共价成分，他的理由是他们都是同核共价。
This is purely covalent because all it is is homonuclear bond energies.
那么，这就是我们所应该想到的基本思路，在考虑共价键时。
So, that's basically the idea of how we are going to be thinking about covalent bonds.
当“航行者”号完工的时候，它身上的零件共价值二百万美元。
When Voyager was finished, it had two million dollars' worth of parts in it.
就像与其类似的共价氟化物和高氯酸盐，都需要非常谨慎处理。
Like similar covalent fluorides and perchlorates, it needs to be handled with extreme caution.
在欧元区成员里的各个央行的黄金总共价值大约3750亿欧元。
The gold in the central Banks of Eurozone members together is worth some 375 billion euros.
因此在中间，这些键，一方面是离子性，另一方面是完美的共价键。
So, somewhere in between, the bonds are, we have a range of bonds between ionic on the one hand, and perfectly covalent on the other hand.
离子键和共价键都是由于原子要达到这个稳定电子构型而形成的。
Both ionic and covalent bonds arise from the tendency of atoms to attain this stable configuration of electrons.
在组蛋白上发生的共价修饰组合，具有功能意义，能被蛋白质识别。
Combinations of covalent modifications on histones that have a functional significance and are recognized by proteins.
组蛋白是染色质的核心，其尾部共价修饰在基因表达调控中有重要作用。
Histone is the core of chromatin, and covalent modification of histone tails have fundamental roles in regulation of gene expression.
组蛋白是染色质的核心，其尾部共价修饰在基因表达调控中有重要作用。
Histone is the core of chromatin, and covalent modification of histone tails have fundamental roles in regulation of gene expression.
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