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，以及各种氨基酸(构成它们蛋白质基本成分)，能够抵抗衰退。

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，一声沉闷溅水声在井底深处回荡，他抖动子旋动已传到子一端抓钩上。

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控制在轨道上？它们是沿着在弯曲时空中实际上是直线螺旋路径移动吗？

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。

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”宏伟螺旋体。

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，即核苷酸螺旋链组成，核苷酸含有一种叫做碱基化学物质。

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

螺旋对称病毒典代表是烟草花叶病毒，这是研究最多一种病毒。

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

螺旋对称、二十面体对称与复合。

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。

For example, you could tape it into a helical shape to create a deployable antenna.

例如，你可以将其缠绕成螺旋形状，以制作一个可展开天线。

Now, one example of a shape that would resonate differently with left-handed and right-handed circularly polarized light would be a helix, and in fact, people will use a helical antenna when they want to pick up on radio waves with just one-handedness.

现在，一个例子就是螺旋形， 它会以不同方式与左旋和右旋圆偏振光发共振。事实上，当人们想要接收单一手性无线电波时， 他们会使用螺旋天线。

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：我们有软件可以轻松处理1头发和2头发， 但我们还没有真正弄清楚如何做出像弹簧一样螺旋状卷发。

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.

再加上在隧道中发现了些幼崽河狸事实，突然间认为河狸挖掘了这些大螺旋形洞穴想法似乎也不那么牵强了。

These magnetic fields are then used to change the trajectory of the electron by bending the electrons toward the center, or optical axis, in a shrinking helical direction.

这些磁场然后被用来改变电子轨迹，通过将电子向中心或光学轴方向弯曲，形成一个逐渐收缩螺旋路径。

So in the same year that Francis Crick unveiled this incredible helical structure that was called a DNA strand, we also discovered the different stages of sleep.

所以在弗朗西斯·克里克揭示这种被称为DNA链惊人螺旋结构同年，我们也发现了睡眠不同阶段。

In a solar system tilted towards the galactic plane, moving forward in a helical  shape, diving up and down through the plane.

在一个倾斜于银河平面太阳系中，以螺旋形前进，上下穿越平面。

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湍流并打破涡流。