Three-D printers are used to make everything from automobile parts to bone replacements for human patients.

3D打印机被用作制造从汽车零部件到人体骨骼替代品等一切东西。

So laryngitis comes down to the three D's: dysphonia, dysphagia, and dyspnea.

我们把喉炎归纳于3个D：dysphonia发音困难、dysphagia吞咽困难、dyspnea呼吸困难。

They ran on what they call the three D's: demilitarisation, demonopolisation and decentralisation.

他们信奉三个 D ：非军事化、去垄断化和去中心化。

A new study shows that three-D technology could change the way doctors look for breast cancer.

最新研究显示，3D技术可以改变医生发现乳癌的方法。

A few years ago, the U.S. Food and Drug Administration approved the use of three-D mammography. And three-D technology found Jennifer Hoeft's tumor.

几年前，美国食品与药品管理局批准使用3D乳房X光检查，3D技术帮助发现了珍妮弗·赫夫特的肿瘤。

She led a study to compare the results of three-D and two-D mammography from nearly a half million patients.

她负责领导了一项研究，从近50万患者中对比3D和2D乳房X光检查的结果。

She made a watery 8. " Fourteen... Three... D... M... Q, " he shouted out.

她打出了水汪汪的8号。“十四… … 三… … D… … M… … Q，”他喊道。

This snazzy three D printed suit has two small turbines on each arm and a large one on the back.

这款时髦的 3D 印花套装每只手臂上有两个小涡轮，背面有一个大涡轮。

It's perfectly reasonable to talk about transformations between dimensions, such as one that takes two D vectors to three D vectors.

谈论维度之间的变换是完全合理的 比如一个从两个D向量到三个D向量的变换。

You might have some of your D electrons, your three D electrons which are high energy might also be involved in reaction.

你可能有一些 D 电子，你的三个高能 D 电子也可能参与反应。

If a three D transformation squishes face onto a plane, there's also a full line of vectors that land on the origin.

如果一个三维变换把一个面压在一个平面上 也会有一整条向量落在原点上。

It's worth emphasizing that two de vector inputs are very different animals from these three D vector outputs, living in a completely separate, unconnected space.

值得强调的是 两个矢量输入与这三个矢量输出是非常不同的动物 它们生活在一个完全独立的 不相连的空间中。

If a three D transformation squishes all of space onto a line, then there's a whole plain full of vectors that land on the origin.

如果三维变换将所有空间压缩到一条直线上 那么就会有一个平面 上面都是落在原点上的向量。

Then when we associate that transformation with its dual vector in three D space, that dual vector is going to be the cross product of V-N-W.

然后当我们把这个变换和它在三维空间中的对偶向量联系起来 这个对偶向量就是V-N-W的外积。

In the language of last video, the column space of this matrix, the place where all the vectors land, is a two D plane slicing through the origin of three D space.

用上个视频的语言来说 这个矩阵的列空间 所有向量的落点 是一个二维平面 穿过三维空间的原点。

Well that doesn't hold up for all of them because you even have special cases like copper and chromium that only go four S one and then start filling three D depending on the circumstances.

好吧，这并不适用于所有这些， 因为你甚至有像铜和铬这样的特殊情况， 它们只有四个 S， 然后根据情况开始填充三个 D。

And it's much easier to think about a three D rotation in terms of some axis of rotation and an angle by which it's rotating, rather than thinking about the full three by three matrix associated with that transformation.

用旋转轴和旋转角度来考虑三维旋转要容易得多 而不是考虑与这个变换相关的完整的3×3矩阵。

Since the full three D grid representing all points can get kind of messy by leaving a copy of the original axes in the background, we can think about the coordinates of where each of these three basis vectors lands.

由于代表所有点的完整三维网格在背景中留下原始轴的副本可能会变得有点混乱 我们可以考虑这三个基向量的每个落点的坐标。

Researchers at Northwestern University gave AI this command design a robot that can walk the computer failed several times, but eventually it settled on a design and utilized a three D printer to create what looks like a squishy block with random cutouts.

西北大学的研究人员给人工智能这个命令设计了一个可以在计算机上行走的机器人，但失败了好几次，但最终它确定了一个设计，并利用 3D 打印机创建了一个看起来像带有随机切口的柔软块的东西。