So it's about the cross section of your hair.

相当于一的横截面那么大。

Utilizing state-of-the-art, extreme ultraviolet lithography, 3 nanometer technology creates transistors that are so small, you could fit 2 million of them in the cross section of a human hair.

利用先进的极紫外光刻，3 纳米工艺可制造极小的晶体管，一的横截面就可容纳两百万个。

Now if we zoom into a cross-section of the rest of the gastrointestinal tract, anywhere from the esophagus till the anus, the walls are typically lined by the same four layers of tissue.

现在，我们把其余消化道的横截面放大来看，即从食管到肛管的部分，其管壁通常都由相同的四层组织构成。

Right. Okay. Aww! - Wow. - We need the cross section.

对。好的。啊。- 哇。- 我们需要看一下横截面。

Let's check out a Fitness Tracker Cross-sectional Diagram.

我们来看看健身追踪器横截面图。

It's T-shaped in cross-section and we only see T-shaped ribs in stegosaurs and in ankylosaurs.

背肋骨横截面呈 T 形，只出现在剑龙类和甲龙类身上。

Last but not least, let's check out a root cross-section.

最后，但最重要的是，让我们看看的横截面。

And just like doubling the height of a cube causes its cross-sectional area to get four times larger but its volume to get eight times larger, when an animal gets bigger, it does get stronger but it gets waaaay heavier.

就像一个立方体的高度增加一倍会导致它的横截面面积增加四倍，但体积却增加八倍，当一个动物变大时，它确实会变得更强壮，但也会变得更重。

In parallel, the lab takes a small cross section of the sample, freezes it, and thinly slices it with a scalpel -- effectively taking a " frozen snapshot, " says Hoving -- and then reviews it under a microscope in a process called a quick section.

同时，实验室会采集样本的一小部分横截面，其冷冻，然后用手其切成薄片，霍文说，这实际上是拍摄“冷冻快照”，然后在显微镜下对其进行检查，这个过程称为快速切片。

If you could unspool this little snail shell, and cut it in a cross-section, you'd see that the cochlea consists of three main chambers that run all the way through it, separated by sensitive membranes.

如果你能打开这个小蜗牛壳，并把它切成一个横截面，你会看到耳蜗由三个贯穿耳蜗的主要腔室组成，它们被敏感的膜隔开。

Now, if you look at the cross-section of the spinal cord, the white matter is on the outside and the gray matter is on the inside, and overall it looks like a butterfly.

现在来看看脊髓的横截面，白质在外面，灰质在里面，总体看上去像一只蝴蝶。

Looking at a cross-section of a bone, there's a hard-external layer known as the cortical bone and a softer internal layer of spongy bone or trabecular bone that is composed of trabeculae.

来看一骨的横截面，这个硬质的外层叫皮质骨，而软一些的松质骨内层，由骨小梁构成。

In the end, both groups had significant yet similar increases in leg lean mass, quad muscle fiber cross sectional area, and their leg-press 1 rep maxes.

最后，两组在腿部肌肉质量、四肌纤维横截面积和腿部最大压力按压次数方面都有显著但相似的增加。

So by cutting a cross section through this data, like we see here, we see a view that no one has seen in over 100 years.

而现在，通过数据横截面切割技，可以获得这样的画面，尘封百余年的历史真容得以重现。

Yeah, there's nothing surprising about the cross section.

是的，看到横截面没什么好惊讶的。

They then took cross sections for slides and used stains to identify different types of tissue.

之后，他们取了横截面制作载片，并用染色剂来辨别不同种类的组织。

If we draw a horizontal line through the spinal cord, the front half is the anterior or ventral half, and the back half is the posterior or dorsal half.

脊髓横截面用横线分隔成前、后两部分，前半部分叫前侧或腹侧，后半部分叫后侧或背侧。

Look inside one and you'll see that they're composed of tubes inside of tubes, so that a cross-section of an osteon looks like the rings of a tree trunk.

看看里面，你会看到它们是由管子里的管子组成的，所以骨的横截面看起来像树干的年轮。

If we zoom into a cross-section of an osteoporotic bone, it will show normal cells with normal mineralization, which differentiates it from osteomalacia where there's lack of mineralization.

如果我们放大来看骨质疏松的骨骼横截面，就能看到正常矿化的细胞，这让它区别于缺少骨质矿化的骨软化症。

This view is called a cross-section — we've made a cut horizontally across the stem, like a flat cucumber slice, and we're facing it head-on.

这个视图被称为横截面——我们在茎上做了一个水平的切口，就像一个扁平的黄瓜片，我们正面对着它。