一：氦是什么意思（中英文）解释的意思

氦是一种无色、无味、无毒的惰性气体，属于元素周期表中的第18族，原子序数为2。它在自然界中存在于极小的量，主要来源于地球内部放射性衰变过程中产生的α粒子。氦具有很低的沸点和凝固点，可以在极低温度下液化，因此被广泛用作制冷剂和惰性保护气体。

Helium is a colorless, odorless, and non-toxic inert gas, belonging to the 18th group of the periodic table with an atomic number of 2. It exists in very small quantities in nature and mainly comes from the α particles produced by radioactive decay in the Earth's interior. Helium has a very low boiling point and freezing point, which can be liquefied at extremely low temperatures, so it is widely used as a refrigerant and inert protective gas.

二：怎么读（音标）

[hē-li-əm]

三：用法

氦主要用作制冷剂和惰性保护气体，在工业领域有广泛的应用。它也可以用作航空航天领域中的推进剂和充填高空大型气球。此外，由于其稳定性和不易燃烧的特性，氦也常被用来充填气球、气球装饰和氦气球。

Helium is mainly used as a refrigerant and inert protective gas, with wide applications in the industrial field. It can also be used as a propellant in the aerospace industry and to fill large high-altitude balloons. In addition, due to its stability and non-flammable properties, helium is also commonly used to fill balloons, balloon decorations, and helium balloons.

四：例句1-5句且中英对照

1. The helium gas in the balloon made it float in the air.

氦气球中的氦气使其在空中漂浮。

2. The temperature of the refrigerator is controlled by the amount of helium gas inside.

冰箱的温度由内部的氦气量。

3. Helium is often used as an inert gas for welding because it does not react with other substances.

由于不与其他物质发生反应，氦经常被用作焊接的惰性气体。

4. Helium is a non-renewable resource and its supply is limited.

氦是一种不可再生资源，其供应有限。

5. The scientists are conducting experiments using liquid helium at extremely low temperatures.

科学家们正在使用极低温度下的液态氦进行实验。

五：同义词及用法

无

六：编辑总结

总的来说，氦是一种无色、无味、无毒的惰性气体，在工业领域有广泛的应用。它具有很低的沸点和凝固点，可以在极低温度下液化，因此被广泛用作制冷剂和惰性保护气体。由于其稳定性和不易燃烧的特性，氦也常被用来充填气球、气球装饰和氦气球。虽然氦是一种不可再生资源，但其供应仍然有限，因此需要节约使用。作为网络词典编辑翻译人员，我们应该准确地解释和描述每个单词的含义，并尽可能地提供相关的例句和同义词，以帮助读者更好地理解单词的用法。