atomic nucleus

简明释义

原子核

英英释义

例句

1.During nuclear fusion, two atomic nuclei combine to form a heavier nucleus.

在核聚变过程中，两个原子核结合形成一个更重的核。

2.The stability of an atom is largely determined by the structure of its atomic nucleus.

一个原子的稳定性在很大程度上取决于其原子核的结构。

3.Scientists study the atomic nucleus to understand the forces that hold it together.

科学家研究原子核以理解将其结合在一起的力量。

4.The atomic nucleus contains protons and neutrons, which are collectively known as nucleons.

原子核包含质子和中子，这些统称为核子。

5.Radioactive decay occurs when an unstable atomic nucleus loses energy.

当不稳定的原子核失去能量时，就会发生放射性衰变。

作文

The study of the atomic nucleus is a fundamental aspect of nuclear physics, which explores the structure and behavior of matter at its most basic level. The atomic nucleus, which is located at the center of an atom, consists of protons and neutrons, collectively known as nucleons. Protons carry a positive charge, while neutrons are neutral. This combination of particles gives the atomic nucleus its mass and stability, playing a crucial role in determining the chemical properties of an element.Understanding the atomic nucleus is essential for various scientific fields, including chemistry, medicine, and energy production. For instance, in chemistry, the arrangement of electrons around the atomic nucleus dictates how atoms interact with one another, forming bonds to create molecules. This interaction is vital for all chemical reactions that sustain life.In medicine, the atomic nucleus is significant in the field of nuclear medicine, where radioactive isotopes are used for diagnosis and treatment. Techniques such as positron emission tomography (PET) rely on the behavior of the atomic nucleus and its emitted radiation to visualize processes within the body, helping doctors identify diseases like cancer at an early stage.Moreover, the atomic nucleus is also the source of nuclear energy. Through processes such as nuclear fission and fusion, the energy released from the atomic nucleus can be harnessed to generate electricity. Nuclear power plants utilize fission reactions, where heavy nuclei, such as uranium-235, are split into smaller nuclei, releasing a significant amount of energy. This energy can then be converted into electricity, providing a substantial power source for many countries.However, the manipulation of the atomic nucleus also raises concerns regarding safety and environmental impact. Nuclear accidents, such as those at Chernobyl and Fukushima, highlight the potential dangers associated with nuclear energy. Additionally, the long-term storage of nuclear waste poses significant challenges, as the materials can remain hazardous for thousands of years due to their radioactive nature.In conclusion, the atomic nucleus is a vital component of matter, influencing various scientific disciplines and applications. Its study not only enhances our understanding of the universe but also provides practical solutions for energy production and medical advancements. As we continue to explore the complexities of the atomic nucleus, it is crucial to balance the benefits with the potential risks, ensuring that we harness its power responsibly for future generations.

对原子核的研究是核物理学的一个基本方面，它探讨了物质在最基本层面的结构和行为。原子核位于原子的中心，由质子和中子组成，这些粒子统称为核子。质子带有正电荷，而中子是中性的。这些粒子的组合赋予了原子核其质量和稳定性，并在决定元素的化学性质方面发挥着关键作用。理解原子核对于化学、医学和能源生产等多个科学领域至关重要。例如，在化学中，电子围绕原子核的排列决定了原子之间的相互作用，从而形成分子。这种相互作用对于维持生命的所有化学反应都是至关重要的。在医学中，原子核在核医学领域具有重要意义，其中放射性同位素用于诊断和治疗。正电子发射断层扫描（PET）等技术依赖于原子核的行为及其发射的辐射，以可视化体内过程，帮助医生在早期识别癌症等疾病。此外，原子核也是核能的来源。通过核裂变和核聚变等过程，从原子核释放的能量可以被利用来发电。核电站利用裂变反应，其中重核，如铀-235，被分裂成较小的核，释放出大量能量。这种能量随后可以转化为电力，为许多国家提供重要的电源。然而，对原子核的操控也引发了关于安全性和环境影响的担忧。切尔诺贝利和福岛等核事故突显了与核能相关的潜在危险。此外，核废料的长期储存也面临重大挑战，因为这些材料由于其放射性特性可能在数千年内保持危险。总之，原子核是物质的重要组成部分，影响着各个科学学科和应用。它的研究不仅增强了我们对宇宙的理解，还为能源生产和医学进步提供了实际解决方案。在我们继续探索原子核的复杂性时，平衡其带来的好处与潜在风险至关重要，确保我们以负责任的方式利用其力量，为未来几代人服务。