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

内聚力指把物质结合在一起的分子间作用力强度。

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子间作用力。

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

答案是分子之间的作用力与结构工程的巧妙结合。

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

但SPN内部的聚合物则更多是由瞬态分子间作用力交联的，例如氢键。

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

另一种主要类型的分子间力是“偶极-偶极力” 。

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

而分子间力又取决于电负性。

Let's look at another intermolecular force, and this one's called hydrogen bonding.

让我们看看另一种分子间作用力，这个叫做氢键。

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

它与将这些分子结合在一起的偶极-偶极相互作用的分子间作用力有关。

Let's look at another intermolecular force.

让我们看看另一种分子间作用力。

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

唯一将两个甲烷分子结合在一起的分子间力是伦敦色散力。