helium

helium什么意思,helium翻译

基本解释

n.: 氦；氦气
网络: 食品添加剂氦；高纯氦；氦元素

权威解释

• 氦；氦气:

  a chemical element. Helium is a very light gas that does not burn, often used to fill balloons and to freeze food.

英汉解释

• 【化学】氦

• 盐沼泽群落

例句

• 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。