The building was originally designed with square corners, but when a scale model was tested in a wind tunnel, the designers saw a lot of swaying.

这座筑原本是四角的，但当一个比例模型在风洞中测试时，师们看到了大量的摇摆。

We have computer optimization techniques so we can design a far more efficient aerodynamic shape, versus having to iterate slowly through wind tunnels.

我们有算机优化技术，这样我们就可以出更有效的动力学外形，而不是在风洞中缓慢迭代。

For example, the delta wing designed to minimize drag at high speed but maximize lift at take off was the result of over 5,000 hours of wind tunnel testing.

例如，三角翼的是为了在高速时减少阻力，但在起飞时增加升力，这是超过5000小时风洞测试的结果。

This phenomenon led engineers to begin testing models of tall buildings in wind tunnels at design stage, assessing the potential impact of high winds on structures before they were constructed.

这一现象导致工程师们开始在阶段在风洞中测试高层筑的模型，在造之前评估大风对结构的潜在影响。

Many homes were built with a central hall, and doors aligned front to back, throwing them open created a wind tunnel of cooler air blowing straight through the house.

很多住宅有中央过道，前后房门呈一条直线排布，把门全部打开就能形风道，凉爽穿堂风贯通整栋房屋。

In 1947, there was no wind tunnel data beyond Mach 0.85.

1947年那时还没有风洞实验数据，只有0.85马赫这个数据。

Undiscouraged, they started experimenting on their own in a small wind tunnel they built.

但两人并不馁，他们随后开始在自己造的小风洞里进行试验。

Specialised software has also been developed for things like structural analysis and computational fluid dynamics, which can be used to explore aerodynamics without the need for an expensive wind tunnel.

还开发了用于结构分析和算流体动力学等方面的专用软件，这些软件可用于探动力学，而无需昂贵的风洞。

At the moment, lots of developing countries do get climate finance, but it mainly goes to help them to transition away from using coal, oil, and gas, to help them build wind tunnels, wind turbines and solar panels.

目前，许多发展中国家确实获得了候融资，但主要是帮助它们摆脱对煤炭、石油和天然的使用，帮助它们造风洞、风力涡轮机和太阳能电池板。

So when we suspend a droplet of water in the wind tunnel, we're seeing exactly what we'd see if we were falling through the air, next to a raindrop, at terminal velocity!

所以当我们在风洞中悬挂一滴水，我们确切地看到我们是否会以最终速度在雨滴旁边从中下落。

So they built a wind tunnel two meters long in their bicycle store in Dayton, Ohio. They tested more than two hundred designs of wings.

所以他们在位于俄亥俄州自己的自行车商店里做了一个两米长的风洞。他们对的两百多种机翼进行测试。

But they were told their idea would never work. So, Mr. Yanez and Mr. Martin built a small wind tunnel to experiment on their own.

但他们被告知他们的想法根本不管用，所以亚涅斯和马丁自己动手造了一个小型风洞来做实验。

The U.S. Air Force, one commentator has written, has put them in wind tunnels to see how they do it, and despaired.

“美国军，”有一位评论员写道，“把它们放在风洞里，看看它们是怎么表现的，结果感到望尘莫及。”

To do so, we often run some virtual wind tunnel tests and optimize our design until we're happy with the results.

为此，我们往往进行一些虚拟风洞测试，并优化我们的，直到我们对结果满意为止。

That, combined with data from their wind tunnel experiments, allowed the brothers to build a much more successful glider.

这个数字与他们风洞实验的数据相结合 ，使莱特兄弟能够造一架更为功的滑翔机。

Droplets suspended in a vertical wind tunnel are experiencing the same net forces as falling raindrops.

悬浮在垂直风洞中的水滴正在经历与下落雨滴相同的净力。

These droplets are suspended in a vertical wind tunnel.

这些水滴悬浮在一个垂直的风洞。

The point is, I can float in a wind tunnel because of those opposing forces: gravity in one direction and the collisions of air molecules in the other.

关键在于我可以在风洞中漂浮，因为这些相反的力：某一个方向的重力和相反方向的分子的碰撞。

An object floating in a wind tunnel is experiencing the same net forces as an object falling at terminal velocity.

漂浮在风洞中的物体正在承受与以最终速度下落的物体相同的净力。

I frequently felt as if I were walking in some kind of sadistic wind tunnel.

我常常感觉自己仿佛置身于一个施虐狂的狂风隧道中，步履维艰。