heavy atom

简明释义

重原子

英英释义

例句

1.In X-ray crystallography, the presence of a heavy atom 重原子 can enhance the diffraction pattern.

在X射线晶体学中，重原子的存在可以增强衍射图案。

2.Adding a heavy atom 重原子 can improve the stability of certain compounds.

添加一个重原子可以提高某些化合物的稳定性。

3.The heavy atom 重原子 effect is crucial in understanding nuclear magnetic resonance.

了解核磁共振时，重原子效应至关重要。

4.In organic synthesis, a heavy atom 重原子 can be used to trace reaction pathways.

在有机合成中，可以使用重原子来追踪反应路径。

5.Researchers often use a heavy atom 重原子 to label biomolecules for better imaging.

研究人员通常使用重原子对生物分子进行标记，以便进行更好的成像。

作文

In the realm of chemistry and physics, the term heavy atom refers to an atom that has a relatively large atomic mass compared to other atoms. These atoms typically have a greater number of protons and neutrons in their nuclei, which contributes to their overall mass. For instance, elements like lead (Pb) and uranium (U) are often classified as heavy atoms, as they are significantly heavier than lighter elements such as hydrogen or carbon. The study of heavy atoms is crucial in various scientific fields, including nuclear physics, radiochemistry, and materials science.One of the most notable characteristics of heavy atoms is their role in nuclear reactions. Due to their larger size and mass, heavy atoms can undergo fission, a process where the nucleus of an atom splits into smaller parts, releasing a tremendous amount of energy. This principle is the foundation of nuclear power plants, where heavy atoms like uranium-235 are used as fuel. When these atoms are bombarded with neutrons, they can split apart, releasing energy that can be harnessed to generate electricity. However, this process also raises concerns about safety and environmental impact, particularly in the case of nuclear accidents.In addition to their applications in energy production, heavy atoms are also significant in medical imaging and treatment. For example, isotopes of heavy atoms are commonly used in positron emission tomography (PET) scans, a type of imaging test that helps doctors observe metabolic processes in the body. By introducing heavy atoms with specific radioactive properties into the body, physicians can obtain detailed images that assist in diagnosing various medical conditions, including cancer.Moreover, heavy atoms play a vital role in understanding the fundamental forces of nature. Research involving heavy atoms can lead to insights about the strong nuclear force, which binds protons and neutrons together within the nucleus. This research is not only important for theoretical physics but also has practical implications in developing new materials and technologies.The study of heavy atoms also extends to the field of astrophysics. Scientists believe that heavy atoms are produced in significant quantities during supernova explosions, which are the catastrophic deaths of massive stars. The elements formed during these explosions are scattered throughout the universe, contributing to the formation of planets and life as we know it. Understanding the lifecycle of heavy atoms in stars helps researchers piece together the history of the universe and the origins of the elements that make up our world.In conclusion, the concept of heavy atom encompasses a wide range of scientific disciplines and applications. From energy production and medical imaging to fundamental research in physics and astrophysics, heavy atoms are integral to our understanding of the natural world. As we continue to explore the properties and behaviors of these fascinating elements, we unlock new possibilities for technology, medicine, and our comprehension of the universe itself. The ongoing study of heavy atoms promises to yield discoveries that will shape the future of science and industry.

在化学和物理学领域，短语heavy atom指的是相对于其他原子具有较大原子质量的原子。这些原子通常在其原子核中拥有更多的质子和中子，从而导致它们的整体质量增加。例如，铅（Pb）和铀（U）等元素通常被归类为heavy atoms，因为它们的质量明显高于氢或碳等轻元素。对heavy atoms的研究在核物理、放射化学和材料科学等多个科学领域中至关重要。heavy atoms最显著的特征之一是它们在核反应中的作用。由于其较大的体积和质量，heavy atoms可以经历裂变，这是一种原子核分裂成更小部分的过程，释放出巨大的能量。这一原理是核电站的基础，其中像铀-235这样的heavy atoms被用作燃料。当这些原子被中子轰击时，它们可以分裂，释放出可以用于发电的能量。然而，这一过程也引发了关于安全性和环境影响的担忧，尤其是在核事故的情况下。除了在能源生产中的应用外，heavy atoms在医学成像和治疗中也具有重要意义。例如，heavy atoms的同位素常用于正电子发射断层扫描（PET）扫描，这是一种帮助医生观察身体代谢过程的成像测试。通过将具有特定放射性特性的heavy atoms引入体内，医生可以获得详细的图像，帮助诊断各种医疗状况，包括癌症。此外，heavy atoms在理解自然基本力量方面也发挥着重要作用。涉及heavy atoms的研究可以为我们提供关于强核力的见解，这种力量将质子和中子结合在一起，形成原子核。这项研究不仅对理论物理学重要，还在开发新材料和技术方面具有实际意义。对heavy atoms的研究还扩展到天体物理学领域。科学家们认为，heavy atoms在超新星爆炸期间生成的数量相当可观，这些爆炸是大质量恒星的灾难性死亡。在这些爆炸过程中形成的元素散布在宇宙中，促进了行星和生命的形成。理解heavy atoms在恒星中的生命周期有助于研究人员拼凑出宇宙的历史以及构成我们世界的元素的起源。总之，heavy atom的概念涵盖了广泛的科学学科和应用。从能源生产和医学成像到物理学和天体物理学的基础研究，heavy atoms对于我们理解自然世界至关重要。随着我们继续探索这些迷人元素的性质和行为，我们为技术、医学以及对宇宙的理解开辟了新的可能性。对heavy atoms的持续研究承诺将带来塑造科学和工业未来的发现。