nuclear fission

简明释义

核裂变

英英释义

例句

1.The process of nuclear fission is used in nuclear power plants to generate electricity.

在核电站中，核裂变的过程被用来发电。

2.The chain reaction of nuclear fission is crucial for the operation of atomic bombs.

对于原子弹的运作来说，核裂变的链式反应是至关重要的。

3.Scientists are researching how to make nuclear fission more efficient and safer.

科学家正在研究如何使核裂变变得更加高效和安全。

4.The discovery of nuclear fission in the 20th century revolutionized energy production.

20世纪对核裂变的发现彻底改变了能源生产。

5.During nuclear fission, the nucleus of an atom splits into smaller parts.

在核裂变过程中，一个原子的原子核分裂成更小的部分。

作文

Nuclear fission is a process in which the nucleus of an atom splits into two or more smaller nuclei, along with the release of a significant amount of energy. This phenomenon occurs when a heavy nucleus, such as that of uranium-235 or plutonium-239, absorbs a neutron and becomes unstable. The instability causes the nucleus to break apart, resulting in the formation of lighter elements and the emission of additional neutrons. These emitted neutrons can then induce further fission reactions in nearby nuclei, leading to a chain reaction. This process is harnessed in nuclear power plants to generate electricity, and it is also the principle behind atomic bombs.The concept of nuclear fission (核裂变) was first discovered in 1938 by scientists Otto Hahn and Fritz Strassmann, and it was later explained by Lise Meitner and Otto Frisch. Their groundbreaking work laid the foundation for the development of nuclear energy and weaponry. Since then, nuclear fission has played a crucial role in both civilian and military applications. In the realm of energy production, it provides a powerful alternative to fossil fuels, contributing to a significant portion of the world's electricity supply.One of the primary advantages of nuclear fission (核裂变) is its ability to produce large amounts of energy from a relatively small amount of fuel. For instance, the energy produced from just one kilogram of uranium-235 can be equivalent to that produced from several tons of coal. This high energy density makes nuclear power an attractive option for meeting the growing global energy demand while minimizing greenhouse gas emissions.However, the use of nuclear fission (核裂变) is not without its challenges. The management of radioactive waste generated from fission reactions poses significant environmental and safety concerns. Additionally, the potential for catastrophic accidents, as seen in incidents like Chernobyl and Fukushima, raises questions about the safety of nuclear power plants. These events have led to heightened public fear and skepticism regarding the use of nuclear energy.Moreover, the proliferation of nuclear weapons remains a critical issue associated with nuclear fission (核裂变). The same technology that enables the generation of energy can also be used to create devastating weapons. This dual-use nature of nuclear technology necessitates strict international regulations and oversight to prevent the spread of nuclear weapons and ensure the peaceful use of nuclear energy.In conclusion, nuclear fission (核裂变) is a powerful process that has transformed the landscape of energy production and military capabilities. While it offers substantial benefits, including high energy output and reduced carbon emissions, it also presents significant challenges related to safety, waste management, and non-proliferation. As the world grapples with the need for sustainable energy solutions, the future of nuclear fission (核裂变) will depend on balancing these advantages and risks, ensuring that this potent technology is used responsibly and safely for the benefit of humanity.

核裂变是一个过程，其中一个原子的核分裂成两个或多个较小的核，同时释放出大量的能量。当一个重核，例如铀-235或钚-239的核吸收一个中子并变得不稳定时，这种现象就会发生。这种不稳定性导致核裂变，形成更轻的元素，并发射额外的中子。这些发射出的中子可以诱导附近核的进一步裂变反应，从而导致链式反应。这个过程在核电厂中被利用来发电，也是原子弹背后的原理。核裂变首次是在1938年由科学家奥托·哈恩和弗里茨·施特拉斯曼发现的，后来被丽泽·梅特纳和奥托·弗里奇解释。他们的开创性工作为核能和武器的发展奠定了基础。从那时起，核裂变在民用和军事应用中发挥了重要作用。在能源生产领域，它提供了一种强大的替代化石燃料的方式，为世界电力供应的很大一部分作出了贡献。核裂变的主要优点之一是能够从相对少量的燃料中产生大量的能量。例如，仅仅一公斤铀-235产生的能量相当于几吨煤产生的能量。这种高能量密度使核能成为满足全球日益增长的能源需求的一个有吸引力的选择，同时最大限度地减少温室气体排放。然而，使用核裂变并非没有挑战。管理裂变反应产生的放射性废物带来了重大的环境和安全隐患。此外，像切尔诺贝利和福岛这样的事故的潜在灾难性风险提高了公众对核电厂安全性的质疑。这些事件导致了公众对核能使用的恐惧和怀疑。此外，核武器扩散仍然是与核裂变相关的一个关键问题。使能量生成成为可能的同样技术也可以用来制造毁灭性的武器。这种核技术的双重用途需要严格的国际法规和监督，以防止核武器的扩散，并确保核能的和平利用。总之，核裂变是一个强大的过程，改变了能源生产和军事能力的格局。虽然它提供了显著的好处，包括高能量输出和减少碳排放，但它也带来了与安全、废物管理和防扩散相关的重大挑战。随着世界应对可持续能源解决方案的需求，核裂变的未来将取决于平衡这些优势和风险，确保这一强大技术负责任和安全地用于人类的利益。