helium

He sat down in his lawn chair. Attached to his lawn chair were 105 large helium balloons.

他坐在草坪椅上，椅子系著一百零五颗灌满氦气的大气球。

The sun is relatively young, part of a generation of stars known as Population I, which are relatively rich in elements heavier than helium.

太阳相对来说还年轻，属于我们所谓的I类恒星，这类恒星中的比氦重的元素相对丰富一些。

Nearly all their mass is made up of hydrogen and helium, giving them compositions like that of the sun.

它们的几乎全部质量都由氢和氦贡献，这使得它们的组成成分与太阳类似。

Just a little British ingenuity that saw a standard digital camera taped to a helium balloon and floated into the sky.

只需要点英国人的小智慧，将一个绑在氦气球上的标准数码相机飘入天空，万事俱矣。

The star used to be like the sun, a "main sequence" star that burns hydrogen by nuclear fusion, producing helium.

这颗恒星曾和太阳一样，是颗“主序星”（“mainsequence”）。它通过核聚变燃烧氢，从而产生氦。

I have here a ball-- you may call it a balloon, but I call it a ball because there's no helium in it.

这里有个小球-，你也会叫它气球，但是我叫它球，因为里面没有氦。

So helium was first discovered on the sun before it was later discovered on Earth by looking at the absorption lines of the solar spectrum.

氦元素首先在太阳上，发现，后来，在地球上发现，通过观察太阳光谱，中的吸收线。

When the universe was born, there was nothing but hydrogen, helium and a little lithium.

当宇宙诞生的时候，除了氢、氦和少量的锂元素之外，什么也没有。

The image was captured using four narrow-band filters that have been tuned to see hydrogen as well as ionized helium, sulfur and oxygen.

获取该图像时使用了四个窄带滤光片，它们都被调谐到可见氢、电离氦、硫和氧。

When the helium content is less than 45%, the character of tri-mixed gas has no evident difference compared with that of argon.

混合气体中氦气的体积百分比小于45%时，其电弧特性与氩弧差别不大。

The force between a pair of helium atoms is so weak that helium does not solidify at all.

一对氦原子之间的作用力微弱得使氦根本不能固化。

He also invented the Skyhook, an air rescue system that involved an airplane and a large helium balloon.

他还发明了高空吊运车，这是一种为飞机和大型的氦气球的空中救援系统。

The way these pebble bed reactors work is the helium comes in up the side and down through the pebble bed. It's not a fluidised bed.

这些卵石层反应堆运作的方式是，氦从这面的上面进来，然后，通过这个卵石层再出去，这不是液化层。

They observed the oscillations of the helium as it twisted back and forth on the end of a metal rod.

他们让氦在金属杆两端前后扭动，观察它振荡的情形。

Look at it again! We gave him an argon- helium cryoablation for his lung cancer.

再来看一看，我们又给他做了肺癌的一个氩氦冷冻消融治疗。

Astronomers ascribed them to thermonuclear fusion of hydrogen or helium or to the sudden accretion of matter onto the star.

天文学家因此可将其归因于氢或氦的热核融合反应，或是有物质突然被星体吸附而产生的。

Why is america wasting its helium? and what is the metal that you were talking about I've never heard of it.

为什么美国在浪费铪？你说的铪是什么东西，我从来没听说过。

Other probes might be sent skimming by Jupiter's atmosphere to collect helium, a valuable gas that Earth may run out of some day.

另外，我们还希望派遣探测船掠过木星的大气层，收集里面珍贵的氦气，以备未来地球上的氦气用完时使用。

As the sun burns, the hydrogen in its core converts to helium by fusion, a process through which the nuclei of atoms meld together.

当太阳燃烧时，内核的氢通过核聚变转化成氦，这是一个原子核合并的过程。

Betty's helium-filled aerostat, three metres across, is capable of carrying loads of a little over half a kilo.

Betty充满氦气的气囊直径3米，能够负载0.5千克或稍多的重量。