There are 3 types of shapes: helical, icosahedral, and complex.

螺旋对称、二十面体对称与复合型。

And they can have 3 types of shapes: helical, icosahedral, and complex.

他们可有三种形状：螺旋对称、二十面体对称与复合型。

Genes, in turn, are made of DNA, helical strands of compounds called nucleotides that contain chemicals called bases.

反过来，基因是由DNA，即核螺旋链组成，核含有一种叫做碱基化学物质。

Sometimes magnetic fields can twist plasma in the Sun's atmosphere into majestic helical shapes called " flux ropes" .

有时磁场会将太阳大气层中等离子体扭曲，成为被称做“通量绳”宏伟螺旋体。

An example of a virus with helical symmetry is the tobacco mosaic virus, which is the most studied example.

螺旋对称型病毒典型代表是烟草花叶病毒，这是究最多一种病毒。

This is why some chimneys are equipped with helical vanes to create turbulence and break up the vortices.

这就是为什么一些烟囱配备了螺旋叶片来产生湍流并打破涡流。

Finally, the complex viruses have a combination of icosahedral and helical shape and may have a complex outer wall or head-tail morphology.

最后，复合型病毒兼具二十面体和螺旋对称结构，可能有复杂外壁或头尾形态。

Or held in orbits by the invisible force of gravity? Or are they following helical paths which are actually straight lines in curved spacetime?

还是被无形地心引力轨道上？它们是沿着弯曲时空中实际上是直线螺旋路径移动吗？

Like xanthan gum, carrageenan is a long, complex polysaccharide and it's curvy helical structure makes it particularly good at binding not only with water, but also with proteins.

像黄原胶一样，角叉菜胶是一种长而复杂多糖，它弯曲螺旋结构使它不仅能与水结合，还能与蛋白质结合。

This invention, crafted meticulously with a coiling helical surface around a cylindrical shaft, transformed irrigation, a boon to the agrarian societies of the time, and even today.

这项发明以围绕圆柱轴盘绕螺旋面精心作，改变了灌溉方式，为当时乃至今天农业社会带来了福音。

At the end of a minute a dull splashing reverberated from the bottom of the well; the helical twist he had imparted to the rope had reached the grapnel below.

一分钟后，一声沉闷溅水声井底深处回荡，他抖动绳子产生旋动已传到绳子一端抓钩上。

Add to that the fact that some baby beavers were found in the tunnels, and suddenly the idea that beavers had made these big helical burrows didn't seem so far-fetched.

再加上隧道中发现了一些小海狸这一事实，突然之间， 海狸造了这些大螺旋形洞穴想法似乎并不那么牵强。

Collagen and other structural proteins such as keratin, the protein our hair is made of, resist decay due to their linear helical structure, as well as various amino acids, the building blocks of protein that form them.

胶原蛋白和其他结构蛋白，如角蛋白(构成我们头发蛋白质)，由于它们呈线性螺旋状结构，以及各种氨基(构成它们蛋白质基本成分)，能够抵抗衰退。

We had the software to be able to do type 1 hair, type 2 hair very easily, but we hadn't really figured out how to do coils that are actually helical and that actually look like springs.

何塞：我们有软件可以很容易地做 1 类头发和 2 类头发， 但我们还没有真正弄清楚如何作实际上是螺旋形并且实际上看起来像弹簧线圈。