That's what creates surface tension and it has a property called cohesion.

这就是产生表面张力的原因它有一种叫做内力的特性。

They pull on each other and create a relatively strong cohesive force that traps you.

他们互相拉扯并形成相当强的内力把你困。

These are sand simulations with different cohesion values.

这些是关于不同内力值的沙地模拟。

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

内力指把物质结合在一起的子间作用力强度。

The higher cohesion is, the harder it is to break the sand up, the bigger the clumps are.

内力越强，沙子也就越难被打散，沙子的块头就越大。

Jarosite has remarkably low cohesion meaning that achieving enough traction to move was  proving impossible.

黄钾铁矾的内力非常低，这意味着无法获得足够的牵引力。

This attraction of water molecules to other water molecules, that's called cohesion.

水子间相互吸引的这种特性，称为内力。

These attractive, also called cohesive, forces pull the surface molecules inward.

这些具有吸引力的，也称为内力的，力量将表面子向内部拉。

We wanted to give you something that reflects our love for you...

为了反映我们家庭的内力。

Oddly enough, larger particles are  actually easier for the wind to get moving as they experience less cohesion.

奇怪的是，较大的颗粒实际上更容易被风，因为它们的内力较小。

And so if we're looking at water, not only is water attracted to itself, we call that cohesion.

因此, 如果我们观察水, 不仅水被自身吸引, 我们称之为内力。

Now, the attraction or " cohesion" between the molecules in liquids give them some important properties.

现在，液体中子之间的吸引力或“内力”赋予它们一些重要的特性。

The water molecules stick to the cat’s tongue thanks to adhesive forces, and stick to each other because of cohesive forces.

由于粘附力，水子粘在猫的舌头上，并由于内力相互粘在一起。

A third effect of cohesion can be observed by placing one end of a very narrow tube, called a " capillary tube" in a liquid.

通过将一根非常细的管子（称为“毛细管”）的一端放入液体中，可以观察到内力的第三个效应。

And what you see when you look at this pile of water is the result of those cohesive forces, minimized surface area in the water in this beaker.

当你看着这杯水时，你看到的是那些内力的结果，也就是水中最小化的表面积。

But because they're  ultimately too heavy for the wind to suspend, they crash down again, and the force of these  tiny impacts imparts enough momentum to overcome cohesion and get the lighter dust airborne.

但由于它们最终太重， 风无法悬浮，它们会再次坠落， 这些微小撞击的力量提供了足够的量克服内力， 使较轻的灰尘飞扬到空中。