liquid helium

简明释义

液氦

英英释义

例句

1.The MRI machine uses liquid helium to maintain the superconducting state of its coils.

MRI机器使用液态氦来维持其线圈的超导状态。

2.A liquid helium storage tank is necessary for experiments requiring ultra-low temperatures.

液态氦储存罐是进行需要超低温实验所必需的。

3.The scientists used liquid helium to cool the superconducting magnets in the particle accelerator.

科学家们使用液态氦来冷却粒子加速器中的超导磁体。

4.Researchers are studying the properties of liquid helium for potential applications in quantum computing.

研究人员正在研究液态氦的性质，以寻找在量子计算中的潜在应用。

5.In cryogenics, liquid helium is essential for reaching temperatures close to absolute zero.

在低温技术中，液态氦对于达到接近绝对零度的温度至关重要。

作文

Liquid helium is a fascinating substance that has captured the attention of scientists and researchers for many years. As one of the few elements that can exist in a liquid state at extremely low temperatures, liquid helium (液氦) plays a crucial role in various scientific applications, particularly in the field of cryogenics. Cryogenics is the study of materials at very low temperatures, typically below -150 degrees Celsius. The unique properties of liquid helium make it an essential component for cooling superconducting magnets, which are used in a variety of technologies, including magnetic resonance imaging (MRI) machines and particle accelerators.One of the most interesting characteristics of liquid helium is its ability to remain in a liquid state even at temperatures close to absolute zero, which is -273.15 degrees Celsius. This property is due to helium's low boiling point, which is around -268.93 degrees Celsius. When cooled to this temperature, helium does not solidify like most other substances; instead, it exhibits a phenomenon known as superfluidity. Superfluidity allows liquid helium to flow without viscosity, meaning it can move through tiny openings and climb walls, defying gravity in a way that is truly remarkable.The applications of liquid helium extend beyond just scientific research. In the medical field, MRI machines rely on superconducting magnets that require constant cooling with liquid helium. This cooling is essential because the superconducting state only occurs at very low temperatures. Without liquid helium, these machines would not be able to function effectively, making it a vital resource in modern medicine.Furthermore, liquid helium is also used in the production of semiconductors and in various types of spectroscopy. Its ability to maintain low temperatures helps improve the performance of these technologies, leading to advancements in electronics and materials science. Researchers are continually exploring new ways to utilize liquid helium in innovative technologies, highlighting its importance in both current and future scientific endeavors.Despite its many advantages, the availability of liquid helium is becoming a growing concern. Helium is a finite resource, and the extraction process can be expensive and environmentally challenging. As demand for liquid helium continues to rise, especially in fields like healthcare and technology, there is an urgent need for sustainable practices in helium production and usage. Scientists are investigating alternative methods for producing helium and ways to recycle it effectively to ensure that this valuable resource remains available for future generations.In conclusion, liquid helium (液氦) is an extraordinary substance with unique properties that make it indispensable in various scientific and technological applications. Its role in cryogenics, medical imaging, and semiconductor production underscores its significance in our modern world. However, as we continue to rely on liquid helium, it is crucial to address the challenges associated with its availability and to seek sustainable solutions for its use. By doing so, we can ensure that the incredible benefits of liquid helium can be enjoyed for years to come.

液氦是一种迷人的物质，多年来吸引了科学家和研究人员的注意。作为少数能够在极低温度下以液态存在的元素之一，液氦（液氦）在各种科学应用中发挥着至关重要的作用，特别是在低温物理学领域。低温物理学是研究材料在非常低温下的学科，通常低于-150摄氏度。液氦的独特性质使其成为冷却超导磁体的关键成分，这些磁体用于多种技术，包括磁共振成像（MRI）机器和粒子加速器。液氦最有趣的特性之一是它能够在接近绝对零度的温度下保持液态，绝对零度为-273.15摄氏度。这个特性归因于氦的低沸点，大约在-268.93摄氏度。当冷却到这个温度时，氦不会像大多数其他物质那样固化；相反，它表现出一种称为超流性的现象。超流性使得液氦可以无粘滞地流动，意味着它可以通过微小的开口移动并爬上墙壁，以一种真正非凡的方式违抗重力。液氦的应用不仅限于科学研究。在医疗领域，MRI机器依赖于需要用液氦持续冷却的超导磁体。这种冷却对于超导状态的发生至关重要，因为超导状态仅在非常低的温度下出现。没有液氦，这些机器将无法有效运行，使其成为现代医学中的重要资源。此外，液氦还用于半导体的生产和各种类型的光谱分析。其保持低温的能力有助于提高这些技术的性能，从而推动电子和材料科学的进步。研究人员正在不断探索利用液氦的新方法，以促进创新技术的发展，强调其在当前和未来科学事业中的重要性。尽管有许多优点，但液氦的可用性正成为一个日益严重的问题。氦是一种有限资源，其提取过程可能既昂贵又对环境产生挑战。随着对液氦的需求持续上升，尤其是在医疗和技术领域，迫切需要在氦的生产和使用中采取可持续的实践。科学家们正在研究生产氦的替代方法以及有效回收氦的方式，以确保这一宝贵资源能够为未来几代人所用。总之，液氦（液氦）是一种具有独特性质的非凡物质，在各种科学和技术应用中不可或缺。它在低温物理学、医学成像和半导体生产中的作用凸显了其在现代世界中的重要性。然而，随着我们继续依赖液氦，解决其可用性相关的挑战并寻求可持续的使用解决方案至关重要。通过这样做，我们可以确保液氦的惊人好处能够在未来几年得到享受。