英语释义

• a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)

片语

helium liquefier[低温] 氦液化器

helium age氦法年龄

Helium Premium氦备份高级版

helium tank氦气瓶

helium thermometer氦温度计

helium survey氦测量

helium gas[化学] 氦气

helium counter氦计数管

helium nucleus氦核

helium embrittlement氦脆

liquid helium[物] 液氦；[物] 液态氦

英汉例句

• In general, the heavier atoms in the atmosphere sink and the light ones remain at the surface, which is why some white dwarfs, for example, have mostly pure hydrogen or helium atmospheres.

  总体来说，较重的原子在大气圈中沉积，而较轻的原子则存在于大气圈表面，这也是一些白矮星具有较纯凈的氢和氦大气圈的原因。

• If helium loses on electron, what do we have?

  如果氦原子失去了一个电子，我们得到了什么？

• Like other stars, the sun is a big ball of gases — mostly hydrogen and helium atoms.

  与其他恒星一样，太阳也是一个巨大的「气球」——大部分主要为氢原子和氦原子。

• 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。

• Similarly we see as we go down the table, so as we「re going from one row to the next row, so, for example, between helium and lithium, we see a drop; the same with neon to sodium, we see a drop here.

  同样地，我们来看看沿着周期表往下走，当我们从一行到下一行时，比如，从氦到锂，我们看到了一个下落，从氖到钠也一样，我们看到这里有个下落。

• After that it is expected to become a red giant, as the hydrogen that presently comprises it is exhausted and the sun switches to burning helium instead.

  之后，据推测太阳会成变成一颗红巨星，因为到那时候现在构成太阳的氢气燃烧殆尽，太阳转而燃烧氦气。

• When it had cooled further, these protons and neutrons were able to get together to form the nuclei of the lightest elements-hydrogen, helium and lithium.

  而随着宇宙的进一步冷却，这些质子与中子便有能力团聚一起并组成质量最小元素中的核子，这些元素即氢、氦与锂。

• We have a helium nucleus and one electron.

  我们有一个氦核和一个电子。

• Just as in the sun, the chain reaction in the second stage fuses the hydrogen atoms into heavier helium atoms and releases vast amounts of energy in the process.

  正如在太阳上所进行的反应一样，第二阶段连锁反应将氢原子聚合成较重的氦原子并在这一过程中释放出巨大的能量。

• The SWEAP solar wind experiment will count the electrons, protons and helium ions in the solar wind and measure their properties.

  SWEAP太阳风实验将计算太阳风中的电子，质子及氦离子的数量，并且测量这些粒子的性质。

• So if you get an ore of the right type of radioactive element, and you wait millions and millions (or even billions) of years, you make a giant underground store of helium !

  所以要是你获得了放射性元素的正确类型矿石后，等上数十亿年（甚至数万亿年）就能获得地下隐藏着的大量氦！

• The particles are generally protons , electrons and helium nuclei and when they collide with nuclei in the Earth」s upper atmosphere they can produce shower s of daughter particles.

  这些粒子主要是质子、电子和氦原子核，并且当他们与地球高层大气中的原子核碰撞，就能产生次级粒子簇射。

• Make the electric windings out of copper pipe instead of wire and pump helium through them.

  把线圈放到铜管外面，而不是让金属丝和泵氦通过其中。

• 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。

• So what is the charge on a helium nucleus?

  那么氦原子核的电荷量是多少呢？

• Fill a lightweight material with hot air, helium or hydrogen, and you have a vessel that floats in the air.

  在容器中充入热气、氦气或氢气等轻气体，就能造就一艘漂在空中的飞船。

• Some cables will deliver helium to the balloons, others will carry the solar energy back to earth.

  其中的一些电缆将传送氦到气球里面，其余的将运载太阳能返回到地球。

• At such temperatures atoms are stripped down to their electrically charged components, so the helium created by fusion remains within the magnetic bottle.

  在这么高的温度下，原子被剥得一丝不挂，只剩带电的组成粒子，因此，聚变产生的氦仍然留在磁瓶之中。