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

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：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，即核苷酸的链组成，核苷酸含有种叫做碱基的化学物质。

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的的等离子体扭曲，成为被称做“通量绳”的宏伟的体。

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

对称型病毒的典型代表是烟草花叶病毒，这是研究最多的种病毒。

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

这就是为什么些烟囱配备了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对称结构，可能有复杂的外壁或头尾形态。

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

还是被无形的地心引力控制轨道上？它们是沿着弯曲时空中实际上是直线的路径移动吗？

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

银河面倾斜的太阳系中，以前移动，银河面中上下俯冲。

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.

分钟后，声沉闷的溅水声井底深处回荡，他抖动绳子产生的动已传到绳子端的抓钩上。

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

然后，这些磁场通过沿收缩的方将电子弯曲到中心或光轴来改变电子的轨迹。

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些小海狸这事实，突然之间， 海狸制造了这些大形洞穴的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(构成我们头发的蛋白质)，由于它们呈线性结构，以及各种氨基酸(构成它们的蛋白质的基本成分)，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制作实际上是形并且实际上看起来像弹簧的线圈。

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，与左手和右手圆偏振光产生不同共振的形的个例子是，事实上，当人们想要仅用根天线接收无线电波时，他们会使用天线-惯用手。