deuterium

简明释义

英[djuːˈtɪəriəm]美[djuːˈtɪriəmˌduːˈtɪriəm]

n. [核] 氘；[核] 重氢

英英释义

单词用法

同义词

反义词

例句

1.Helium-3 has one less neutron than regular helium (helium-4) and is also produced in the sun and almost as quickly consumed in fusion reactions as deuterium.

氦- 3比普通氦(氦- 4)少一个中子，并且同样在太阳里产生然后象氘一样在核聚变中迅速被消耗掉。

2.Cold fusion has been investigated by the electrolytical method and the deuterium absorption method.

采用电解法和氘气吸附法研究了冷聚变现象。

3.Most current fusion efforts look to combine two atoms of deuterium, a heavier version of hydrogen with an extra neutron.

最流行的聚变做法是将两个氘原子结合在一起——氘是带有一个额外的中子的重氢。

4.Pure deuterium reactions also produce neutrons, though only about 1/3 of the fusion energy is released as such.

纯氘反应也会产生中子，虽然最多只能释放出三分之一的聚变能。

5.Deuterium generating by heavy water electrolysis is one of the most important generating deuterium methods.

电解重水制氘是生产高纯氘的重要方法之一。

6.They found deuterium at higher levels than it's found in Earth water —but at levels similar to the comets Hale-Bopp, Hyakutake and Halley.

他们发现，同地球上的水相比，氘的含量更高——但同海尔·波普彗星、哈库塔克彗星和哈雷上的水有着相似的平。

7.In nuclear fusion experiments, scientists often use deuterium (重氢) as a fuel source.

在核聚变实验中，科学家们常常使用deuterium (重氢) 作为燃料来源。

8.The presence of deuterium (重氢) in water can be used to trace the movement of water in ecological studies.

水中deuterium (重氢) 的存在可以用于追踪水在生态研究中的运动。

9.Researchers are investigating the effects of deuterium (重氢) on chemical reactions.

研究人员正在调查deuterium (重氢) 对化学反应的影响。

10.Heavy water, which contains deuterium (重氢), is used in some types of nuclear reactors.

含有deuterium (重氢) 的重水用于某些类型的核反应堆。

11.In mass spectrometry, deuterium (重氢) is often used as an internal standard.

在质谱分析中，deuterium (重氢) 常被用作内标。

作文

Deuterium, represented by the symbol D or 2H, is one of the two stable isotopes of hydrogen. Unlike ordinary hydrogen, which has just one proton in its nucleus, deuterium contains one proton and one neutron. This additional neutron gives deuterium a mass that is approximately twice that of regular hydrogen, making it an interesting subject of study in various scientific fields, including chemistry, physics, and environmental science. The presence of deuterium in nature is relatively rare, constituting about 0.0156% of all hydrogen found on Earth. It can be found in ocean water, where it occurs in the form of heavy water (D2O). Heavy water is used in certain types of nuclear reactors and is essential for nuclear fusion research. The unique properties of deuterium make it a valuable tool in tracing chemical reactions and studying molecular structures. In chemistry, deuterium is often used as a substitute for hydrogen in various reactions. This substitution allows scientists to track the movement of atoms through different processes. For example, in metabolic studies, researchers can use compounds containing deuterium to trace how substances are utilized in living organisms. This technique provides insights into metabolic pathways and can help in drug development. Moreover, deuterium plays a significant role in nuclear magnetic resonance (NMR) spectroscopy, a powerful analytical technique used to determine the structure of organic compounds. In NMR, the presence of deuterium alters the magnetic properties of molecules, enabling more precise measurements and clearer results. This application is particularly beneficial in studying complex biological molecules, such as proteins and nucleic acids. The significance of deuterium extends beyond laboratory research. It also has implications in environmental science. The ratio of deuterium to hydrogen in natural waters can provide information about hydrological cycles and climate change. By analyzing the isotopic composition of water samples, scientists can infer past temperatures and precipitation patterns, contributing to our understanding of global warming and its effects on ecosystems. In conclusion, deuterium is not just a simple isotope of hydrogen; it is a crucial element in various scientific disciplines. Its unique properties allow for innovative research methods and applications that enhance our understanding of both fundamental science and practical issues. As we continue to explore the potential of deuterium, we may uncover even more ways in which this fascinating isotope can contribute to advancements in technology, medicine, and environmental conservation. Understanding deuterium is essential for anyone interested in the sciences, as it opens doors to a deeper comprehension of the world around us.

氘，用符号D或2H表示，是氢的两种稳定同位素之一。与普通氢只有一个质子在其核中不同，氘含有一个质子和一个中子。这额外的中子使得氘的质量大约是普通氢的两倍，这使它在化学、物理和环境科学等各个科学领域中成为有趣的研究对象。 氘在自然界中的存在相对稀少，约占地球上所有氢的0.0156%。它可以在海水中找到，以重水（D2O）的形式存在。重水被用于某些类型的核反应堆，并且在核聚变研究中至关重要。氘的独特性质使其成为追踪化学反应和研究分子结构的宝贵工具。 在化学中，氘通常用作各种反应中氢的替代品。这种替代允许科学家跟踪原子在不同过程中的运动。例如，在代谢研究中，研究人员可以使用含有氘的化合物来追踪物质在生物体内的利用。这一技术提供了对代谢途径的深入了解，并且可以帮助药物开发。 此外，氘在核磁共振（NMR）光谱学中也发挥着重要作用，这是一种强大的分析技术，用于确定有机化合物的结构。在NMR中，氘的存在改变了分子的磁性，使得测量更为精确，结果更为清晰。这一应用在研究复杂的生物分子，如蛋白质和核酸时尤其有益。 氘的重要性不仅限于实验室研究。它在环境科学中也有影响。自然水中氘与氢的比率可以提供有关水文循环和气候变化的信息。通过分析水样的同位素组成，科学家可以推断过去的温度和降水模式，从而帮助我们理解全球变暖及其对生态系统的影响。 总之，氘不仅仅是氢的一个简单同位素；它是各个科学学科中的关键元素。它的独特性质允许创新的研究方法和应用，增强我们对基础科学和实际问题的理解。随着我们继续探索氘的潜力，我们可能会发现更多这种迷人同位素能够促进技术、医学和环境保护进步的方法。理解氘对于任何对科学感兴趣的人来说都是必不可少的，因为它为我们更深刻地理解周围的世界打开了大门。