fission

简明释义

英[ˈfɪʃ(ə)n]美[ˈfɪʃn]

n. 裂变；分裂；分体；分裂生殖法

复 数 f i s s i o n s

第 三 人 称 单 数 f i s s i o n s

现 在 分 词 f i s s i o n i n g

过 去 式 f i s s i o n e d

过 去 分 词 f i s s i o n e d

英英释义

单词用法

同义词

反义词

例句

1.Some byproducts of the nuclear fission are themselves radioactive.

有些核裂变产生的副产品自身具有放射性。

2.In some countries that secrecy stemmed from the military USES of nuclear fission.

某些国家，那种秘密是基于将核裂变用军事用途。

3.Uranium 235 — the fuel inside a nuclear reactor — undergoes nuclear fission.

铀235——反应堆中的燃料——经过核裂变。

4.And the energy is relatively large, 168 MEV per fission.

能量是相当大的，168兆伏，每裂变。

5.When you split a uranium 235 atom you will create what we call fission fragments.

当你们将铀235原子分离的时候,你会创造出我们称为裂变碎片的。

6.The fission reactions that happen are all about proximity.

发生的裂变反应基本都类似。

7.Nuclear fission releases tremendous amounts of energy.

核裂变释放出巨大的能量。

8.As Masurium, it was the first element discovered that occurs in nature only from spontaneous fission, and as Technetium, it was the first element discovered in a laboratory.

作为Masurium，它是在自然界中发现的第一种只能通过自然裂变产生的元素；作为锝，它是在实验室中发现的第一种元素。

9.Nuclear power plants use the process of fission to generate electricity.

核电站利用裂变过程来发电。

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

在裂变过程中，原子核分裂成更小的部分。

11.The discovery of fission was a significant milestone in nuclear physics.

对裂变的发现是核物理学的重要里程碑。

12.Scientists are researching how to control fission reactions for safe energy production.

科学家们正在研究如何控制裂变反应以安全地生产能源。

13.In a nuclear bomb, uncontrolled fission results in a massive explosion.

在核弹中，不受控制的裂变导致巨大的爆炸。

作文

Nuclear energy has become a significant part of our world, providing power to millions and contributing to advancements in technology. One of the most fascinating processes involved in nuclear energy is fission, which is the splitting of an atomic nucleus into smaller parts. This process releases a tremendous amount of energy, making it a powerful source for electricity generation. Understanding fission is crucial for anyone interested in the fields of physics, engineering, or environmental science. The concept of fission was first discovered in the late 1930s by scientists Lise Meitner and Otto Hahn. They observed that when uranium atoms were bombarded with neutrons, they would split into lighter elements, releasing energy in the form of heat and radiation. This groundbreaking discovery led to the development of nuclear reactors, which harness this energy for practical use. In a nuclear reactor, fission occurs in a controlled environment. Uranium-235 or plutonium-239 is typically used as fuel. When a neutron collides with the nucleus of these heavy atoms, it causes the nucleus to become unstable and split into two smaller nuclei, along with additional neutrons and energy. The released neutrons can then initiate further fission reactions in nearby nuclei, creating a chain reaction. This chain reaction is carefully managed to ensure that it proceeds at a steady rate, producing a continuous supply of energy. The energy produced from fission is used to heat water, creating steam that drives turbines to generate electricity. This method of power generation is highly efficient and capable of producing large amounts of energy with relatively low fuel requirements. Furthermore, nuclear power plants emit very low levels of greenhouse gases compared to fossil fuel plants, making them an attractive option for reducing carbon emissions and combating climate change. However, the process of fission also raises concerns regarding safety and waste management. The potential for nuclear accidents, such as those seen in Chernobyl and Fukushima, highlights the risks associated with fission technology. Additionally, the radioactive waste generated from fission reactions poses a long-term disposal challenge, as it remains hazardous for thousands of years. Therefore, while fission presents a viable energy source, it is imperative that stringent safety measures and waste management strategies are implemented. In conclusion, fission is a remarkable scientific phenomenon that has transformed the way we produce energy. Its ability to release vast amounts of energy through the splitting of atomic nuclei has made it a cornerstone of nuclear power generation. As we continue to seek sustainable energy solutions, understanding and improving fission technology will be essential. Balancing the benefits of fission with the associated risks will be critical in shaping the future of energy production and ensuring a safe and sustainable environment for generations to come.

核能已成为我们世界的重要组成部分，为数百万人的生活提供动力，并促进了科技的进步。在核能中，一个最令人着迷的过程是裂变，即原子核分裂成更小的部分。这个过程释放出巨大的能量，使其成为发电的强大来源。理解裂变对于任何对物理、工程或环境科学感兴趣的人来说都是至关重要的。 裂变的概念最早是在20世纪30年代末由科学家丽泽·迈特纳和奥托·哈恩发现的。他们观察到，当铀原子被中子轰击时，会分裂成较轻的元素，释放出热量和辐射形式的能量。这一突破性发现导致了核反应堆的发展，这些反应堆利用这种能量进行实际应用。 在核反应堆中，裂变在一个受控的环境中发生。铀-235或钚-239通常用作燃料。当一个中子与这些重原子的核碰撞时，它会使核变得不稳定并分裂成两个较小的核，以及额外的中子和能量。释放的中子可以进一步引发附近核中的更多裂变反应，从而产生链式反应。这个链式反应被精心管理，以确保它以稳定的速度进行，产生持续的能量供应。 从裂变中产生的能量用于加热水，产生蒸汽驱动涡轮机发电。这种发电方法效率高，能够以相对较低的燃料需求生产大量能量。此外，与化石燃料电厂相比，核电厂排放的温室气体水平非常低，使其成为减少碳排放和应对气候变化的有吸引力的选择。 然而，裂变的过程也引发了关于安全性和废物管理的担忧。核事故的潜在风险，如切尔诺贝利和福岛所见，突显了与裂变技术相关的风险。此外，从裂变反应中产生的放射性废物在长期处置方面构成挑战，因为它在数千年内仍然是危险的。因此，虽然裂变呈现出一种可行的能源来源，但实施严格的安全措施和废物管理策略至关重要。 总之，裂变是一个非凡的科学现象，改变了我们生产能源的方式。通过原子核的分裂释放大量能量的能力使其成为核能发电的基石。随着我们继续寻求可持续的能源解决方案，理解和改善裂变技术将是至关重要的。在平衡裂变的好处与相关风险方面，将对塑造未来的能源生产并确保为后代创造安全和可持续的环境至关重要。