英汉词典:helium
基本释义
helium(氦气)是一种化学元素,符号为 He,原子序数为 2,属于稀有气体,主要用于气球、冷却剂等。
词性分析
“helium”主要作为名词使用,没有形容词形式。
词语辨析
helium与其他气体如氢(hydrogen)和氮(nitrogen)相比,具有更轻的特性,且不易与其他元素反应,因此在许多应用中更为安全。
词汇扩充
- helium balloon(氦气球)
- helium tank(氦气罐)
- liquid helium(液氦)
近义词
- noble gas(惰性气体)
反义词
- hydrogen(氢)
词典参考
- 柯林斯词典:helium is a colorless, odorless, tasteless gas that is the second lightest element in the universe.
- 牛津词典:helium is a chemical element that is a gas at room temperature and does not combine with other elements.
用法示例
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The party was a hit thanks to the numerous helium balloons.
派对因众多的氦气球而受欢迎。
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They filled the helium tank before starting the decorations.
他们在开始装饰之前填充了氦气罐。
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Scientists use liquid helium to achieve extremely low temperatures.
科学家使用液氦来达到极低的温度。
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Helium is used in balloons because it is lighter than air.
氦气用于气球,因为它比空气轻。
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He lost his voice after inhaling helium from a balloon.
他在吸入氦气后失去了声音。
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Helium is a non-toxic gas, making it safe for use in parties.
氦气是一种无毒气体,使其在聚会上使用是安全的。
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Many people enjoy the funny voices produced by inhaling helium.
许多人喜欢吸入氦气后产生的搞笑声音。
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Helium is often used in cryogenics for its cooling properties.
氦气常用于低温学,因为它的冷却特性。
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When exposed to high temperatures, helium remains stable.
在高温下,氦气保持稳定。
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Helium is the second most abundant element in the universe.
氦气是宇宙中第二丰富的元素。
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Some researchers are exploring helium-3 as a potential energy source.
一些研究人员正在探索氦-3作为潜在的能源来源。
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Helium is used in gas lasers for its unique properties.
氦气用于气体激光器,因其独特特性。
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Many scientific experiments depend on the use of helium.
许多科学实验依赖于氦气的使用。
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Helium balloons can float because they are filled with a lighter gas.
氦气球能漂浮,因为它们充满了更轻的气体。
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At high altitudes, helium can behave differently than at sea level due to pressure changes.
在高海拔地区,由于压力变化,氦气的表现可能与海平面不同。
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The density of helium is much lower than that of air.
氦气的密度远低于空气。
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Helium is often used in balloon decorations for events.
氦气常用于活动的气球装饰。
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Using helium in medical imaging has shown promising results.
在医学成像中使用氦气已显示出良好的结果。
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Helium is a key component in the production of semiconductors.
氦气是半导体生产中的关键成分。