The answer lies in a clever combination of intermolecular forces and stuctural engineering.

答案是分之间的作用与结构工程的巧妙结合。

Cohesion means the strength of intermolecular forces that hold the material together.

内把物质结合在一起的分间作用强度。

They are used to help it grip to surfaces using intermolecular forces.

它们帮助壁虎抓住物体表面采用分间作用。

But polymers within the SPN are crosslinked by more transient intermolecular forces, such as hydrogen bonding.

但SPN内部的合物则更多是由瞬态分间作用交联的，例如氢键。

The other main type of intermolecular forces are " dipole-dipole forces."

另一种主的分间是“偶极-偶极” 。

The only intermolecular force that's holding two methane molecules together would be London dispersion forces.

唯一将两个甲烷分结合在一起的分间是伦敦色散。

It's very weak, which is why London dispersion forces are the weakest intermolecular forces.

它非常弱，这就是为什么伦敦色散是最弱的分间。

We're talking about an intermolecular force.

我们谈论的是分间作用。

But it is the strongest intermolecular force.

但它是最强的分间作用。

It's happening because of what we call " intermolecular forces."

它的发生是因为我们称之为“分间作用” 。

Here's your hydrogen showing intermolecular force here.

这是你的氢在这里显示分间。

But, do not get me wrong, here. I'm not saying that intermolecular forces aren't important.

但是，不误会我的意思，在这里。我并不是说分间作用不重。

There are basically 2 main types of intermolecular forces.

基本上有两种主的分间作用。

So these are the weakest intermolecular forces, and they have to do with the electrons that are always moving around in orbitals.

所以这些是最弱的分间，它们与总是在轨道上移动的电有关。

Let's look at another intermolecular force.

让我们看看另一种分间作用。

And an intermolecular force would be the force that are between molecules.

分间就是分之间的。

And so let's look at the first intermolecular force.

那么让我们看看第一个分间。

The strength of that surface tension depends on the intermolecular forces that pull molecules of a liquid together.

表面张的强度取决于将液体分拉到一起的分间作用。

And it has to do with the intermolecular force of dipole-dipole interactions holding those molecules together.

它与将这些分结合在一起的偶极-偶极相互作用的分间作用有关。

And the intermolecular force, in turn, depends on the electronegativity.

而分间又取决于电负性。