thermal expansion

简明释义

热膨胀

英英释义

例句

1.In cold weather, thermal expansion can cause cracks in concrete structures.

在寒冷天气中，热膨胀可能会导致混凝土结构出现裂缝。

2.The bridge was designed to accommodate thermal expansion, ensuring safety during temperature fluctuations.

这座桥的设计考虑了热膨胀，以确保在温度波动期间的安全。

3.The design of the building includes features to manage thermal expansion effectively.

建筑设计包括有效管理热膨胀的功能。

4.Engineers must account for thermal expansion when building railways to prevent buckling.

工程师在建造铁路时必须考虑热膨胀以防止变形。

5.The metal pipes expanded due to thermal expansion when heated, causing leaks.

金属管道因加热而发生热膨胀，导致泄漏。

作文

Thermal expansion is a fundamental concept in physics that describes how materials change their dimensions when subjected to changes in temperature. When an object is heated, its particles gain energy and move more vigorously, causing them to occupy more space. This phenomenon can be observed in everyday life, such as when metal railings expand on a hot day or when a glass jar becomes difficult to open after being heated. Understanding thermal expansion (热胀冷缩) is crucial for engineers and architects as they design structures that can withstand temperature fluctuations without sustaining damage. The principle of thermal expansion (热胀冷缩) is not limited to solids; it also applies to liquids and gases. For instance, when water is heated, it expands, which is why hot water rises to the surface in a pot. Similarly, in the atmosphere, warm air is less dense than cold air, causing it to rise. This behavior is essential for various natural processes, including weather patterns and ocean currents. In engineering, the implications of thermal expansion (热胀冷缩) must be carefully considered during the design phase of construction projects. Materials such as concrete and steel have specific coefficients of thermal expansion, which dictate how much they will expand or contract with temperature changes. If these factors are ignored, it can lead to structural failures, such as cracks in bridges or buildings. One famous example of the effects of thermal expansion (热胀冷缩) is the Golden Gate Bridge in San Francisco. The bridge was designed with expansion joints that allow for movement as temperatures change throughout the year. Engineers calculated the potential expansion of the materials used in the bridge to ensure its longevity and stability. Without these considerations, the bridge could have suffered from severe structural issues over time. In addition to construction, thermal expansion (热胀冷缩) plays a vital role in manufacturing processes. For instance, in the production of metal parts, manufacturers often heat the metal to expand it, allowing it to fit into molds more easily. Once cooled, the metal contracts and solidifies, taking on its final shape. Understanding the principles of thermal expansion (热胀冷缩) helps manufacturers optimize their processes and reduce waste. Furthermore, scientists study thermal expansion (热胀冷缩) to understand materials at a molecular level. Research in this area has led to the development of new materials that can withstand extreme temperatures without deforming. For example, aerospace engineers are particularly interested in materials that exhibit minimal thermal expansion (热胀冷缩) to ensure the integrity of spacecraft during re-entry into the Earth's atmosphere. In conclusion, thermal expansion (热胀冷缩) is a pervasive phenomenon that affects various aspects of our lives, from the design of infrastructure to the manufacturing of everyday products. A comprehensive understanding of this concept is vital for preventing structural failures and optimizing industrial processes. As we continue to explore the properties of materials, the knowledge of thermal expansion (热胀冷缩) will remain a cornerstone of scientific and engineering advancements.

热胀冷缩是物理学中的一个基本概念，描述了材料在温度变化时如何改变其尺寸。当物体被加热时，其粒子获得能量并更加剧烈地运动，导致它们占据更多的空间。这个现象可以在日常生活中观察到，例如在炎热的天气中金属栏杆膨胀，或者加热后玻璃罐变得难以打开。理解热胀冷缩对工程师和建筑师至关重要，因为他们设计的结构必须能够承受温度波动而不受损害。热胀冷缩不仅限于固体；它也适用于液体和气体。例如，当水被加热时，它会膨胀，这就是为什么热水在锅中会上升。同样，在大气中，温暖的空气比冷空气密度小，导致它上升。这种行为对各种自然过程至关重要，包括天气模式和海洋洋流。在工程中，热胀冷缩的影响必须在建筑项目的设计阶段仔细考虑。混凝土和钢铁等材料具有特定的热膨胀系数，决定了它们在温度变化时会膨胀或收缩多少。如果忽视这些因素，可能会导致结构故障，例如桥梁或建筑物的裂缝。一个著名的例子是旧金山的金门大桥，热胀冷缩的影响。该桥设计了扩展接头，以允许随着一年中温度变化而移动。工程师计算了桥梁所用材料的潜在膨胀，以确保其持久性和稳定性。如果没有这些考虑，桥梁可能会随着时间的推移遭受严重的结构问题。除了建筑，热胀冷缩在制造过程中也起着重要作用。例如，在金属零件的生产中，制造商通常会加热金属以使其膨胀，从而更容易地适合模具。一旦冷却，金属就会收缩并固化，形成最终形状。理解热胀冷缩的原理有助于制造商优化他们的流程并减少浪费。此外，科学家研究热胀冷缩以理解材料的分子层面。这方面的研究导致了新材料的开发，这些材料能够在极端温度下保持形状而不变形。例如，航空航天工程师特别关注那些表现出最小热胀冷缩的材料，以确保航天器在重新进入地球大气层时的完整性。总之，热胀冷缩是一个普遍存在的现象，影响着我们生活的各个方面，从基础设施的设计到日常产品的制造。全面理解这一概念对于防止结构故障和优化工业过程至关重要。随着我们继续探索材料的特性，热胀冷缩的知识将始终是科学和工程进步的基石。