氢原子可熔合成氦。
氢变成氦的时候会释放能量。
氦是一种用于气球的气体。
太阳一类的恒星在其核心将氢聚变成氦。
Stars like our sun fuse hydrogen in their cores into helium.
它含有非常少的氢和氦。
应该有一个监管机构确保氦的使用是谨慎的。
A regulatory agency should ensure that helium is used carefully.
氦是钍和铀元素数千年放射性衰变的副产品。
Helium is the by product of millennia of radioactive decay from the elements thorium and uranium.
政府通过出售氦不仅可以偿还债务，还可以减少总体债务。
By selling the helium, the government can not only pay off that debt but reduce its overall debt as well.
另一个重要的特性是氦的独特沸点，比其他任何元素的沸点都低。
Another important attribute is the unique boiling point of helium, which is lower than that of any other element.
事实上，银河系中24%的元素质量是由氦组成的，这使它成为宇宙中第二丰富的元素。
In fact, 24 per cent of our galaxy elemental mass consists of helium, which makes it the second most abundant element in our universe.
然而，通过光谱学测量，宇宙中氦的数量表明，宇宙中重子的数量要比基于星系光度所估计的要多得多。
However, the amount of helium in the universe, as measured by spectroscopy, suggests that there are far more baryons in the universe than estimates based on galactic luminosity indicate.
现有的所有氦供给应该被保存下来，并且只有在获得许可的情况下才能释放，医疗用途优先于其他商业或娱乐需求。
All existing supplies of helium ought to be conserved and released only by permit, with medical uses receiving precedence over other commercial or recreational demands.
首先，所有现有的氦供应应该被保存下来，并且只有在获得许可的情况下才能释放，医疗用途应优先于其他商业或娱乐需求。
Firstly, all existing supplies of helium ought to be conserved and released only by permit, with medical uses receiving precedence over other commercial or recreational demands.
无论市场价格，国家氦储备局将在2015年之前清算其氦资产。
National Helium Reserve to liquidate its helium assets by 2015 regardless of the market price.
他证实了，阿尔法粒子就是氦核。
And there he was able to identify the alpha particle as the helium nucleus.
以前的观测只追踪了氦原子。
Previous observations had traced only incoming helium atoms.
由于太阳风，月壤充满了氦。
The moon's lunar soil is chock-full of helium reserves, thanks to the solar wind.
星体燃烧了核内的氦，吞并了行星或伴星吗？
Did the star ignite helium at the core, swallow a planet, or swallow a companion star?
如果氦原子失去了一个电子，我们得到了什么？
阿尔法粒子是氦核，它们是放射性衰变的产物。
Alpha particles are these helium nuclei, and they are the result of radioactive decay.
聚变后形成氦以及一种称为“中子”的亚原子粒子。
They would form helium and a subatomic particle, called a neutron.
随后一罐罐的氦- 3就被送至地球用于核聚变产能。
Canisters of the harvested helium-3 are then sent to Earth to be used to generate fusion energy.
把线圈放到铜管外面，而不是让金属丝和泵氦通过其中。
Make the electric windings out of copper pipe instead of wire and pump helium through them.
机器为铜线圈充电，形成一个弱磁场，使得氦原子旋转。
The machine's electrified copper coils generate a weak magnetic field, causing the helium atoms to rotate.
就像大部分其它恒星一样，太阳主要由氢构成，其次是氦。
Just like most other stars, the sun is made up mostly of hydrogen, followed by helium.
有些能量凝结成了粒子，这些粒子组合形成了轻原子如氢和氦。
Some of this energy congealed into particles, which assembled into light atoms like hydrogen and helium.
然后我们有气体冷却反应堆，那能使用超临界二氧化碳或者氦。
And then we have gas cooled reactors which can use supercritical carbon dioxide or helium.
第一章幻灯片是在,实验室里氦，氦钙以及钠的光谱。
The first slide is a spectrum made in the laboratory of hydrogen, helium and calcium and sodium.
虽然目前FHR仍拥有最多的氦储备，但是它的库存也在迅速下降。
Though the FHR still holds more helium than any other stockpile by far, its stores are rapidly diminishing.
当宇宙最初从大爆炸中诞生时，整个世界基本上就是由氢和氦组成的。
When the universe emerged from the Big Bang, it consisted almost entirely of hydrogen and helium.
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