Both balloon and paper bag contain pressurized air pushing outagainst the sides.

气袋里都含有带压空气，这些空气向四周接触面上施压。

He and his colleagues found that the softer the surface the smaller the splash.

他同事发现，接触面越柔软，飞溅程度越小。该。

This steel wool is basically just thinly shaved metal that's mostly iron, and the more fine, the more surface area the metal has, the easier it is to burn.

钢丝大概就是削得很细的金属，大部分是铁，并且更纯，金属的接触面越大，越容易燃烧。

Her conclusion is that the reflection does indeed sometimes come from the interface between snow and ice, as it is supposed to. But not always.

她的结论是反射有时确实是来自雪冰的接触面，应该如此，但不常发生。

LiquiGlide came about due to an infamous interface problem in the oil industry. Drilling oil unearths all types of crud, mucky sediment and minerals.

石油行业中有个讨厌棘手的接触面问题，LiquiGlide的成立正是为了解决这一问题。石油钻探挖掘各类杂质、淤泥质沉积物矿物。

And what's cool about this is this is in general going to be true for any two materials that are like this.

很棒的是 该数的值只取决于接触面材料 很棒的是 该数的值只取决于接触面材料 比如特定木头接触特定木头。

So you have to get a lot of air to pass over what is basically like a contact surface.

所以你必须让大量的空气通过类似于接触面的西。

A second major factor has to do with surface area.

第二个主要因素接触面有关。

Much smaller than that box I just drew.

接触面的粒子会怎样。

An interface is any spot or surface where two things meet. You're familiar with the physical forces creating friction and solid interfaces, like when a tire skids on a road.

两个物体相遇的任何点面即是接触面。大家对物理力产生摩擦固体界面比较熟悉，比如像轮胎在路上打滑。

Steel wool burns because these long strands have huge surface areas that are exposed and ready to react with the oxygen in the air.

钢丝烧得很快，因为这些长线有更大接触面暴露（在空气中），准备与空气中的氧发生反应。

That's Kripa Varanasi, a mechanical engineer at the Massachusetts Institute of Technology who co-created LiquiGlide to battle the nefarious issue of interfaces.

这是麻省理工学院的机械工程师克利潘·威瓦纳斯，为攻克接触面难题，威瓦纳斯与人合伙创立了LiquiGlide。

So if you were to really zoom in here, when this thing is stationary, the surfaces aren't actually even.

接触面并不平 接触面并不平。

I love to, what I love about it is this, look, it's not going to make you like fluent in any of this, but the exposure is so great.

我喜欢的是， 你看，这不会让你通任何一项技能，但接触面非常广。

And the reason is that if you think about marketing, it's expanding the surface area of the product, right?

原因在于， 如果你考虑营销，它就是在扩大产品的接触面，对吧？

So to have a better interface with the air, you put a big curvy shape right after the diaphragm.

所以为了与空气有更好的接触面，你在隔膜后面立即放置了一个大弯曲形状。

The mold base needs to lower the surface to guarantee enough contacting surface between the core and cavity blocks.

模板需要降面来保证动定模仁之间足够的接触面。