thermal expansion

简明释义

热膨胀

英英释义

例句

1.In cold weather, the thermal expansion 热膨胀 of materials can lead to cracks in roads.

在寒冷天气中，材料的热膨胀可能导致道路出现裂缝。

2.The glass container broke due to thermal expansion 热膨胀 when hot liquid was poured into it.

当热液体倒入玻璃容器时，由于热膨胀，容器破裂了。

3.The thermal expansion 热膨胀 of metals is a crucial factor in manufacturing processes.

金属的热膨胀是制造过程中一个关键因素。

4.When metal is heated, it undergoes thermal expansion 热膨胀, causing it to expand.

当金属被加热时，它会经历热膨胀，导致它膨胀。

5.Engineers must consider thermal expansion 热膨胀 when designing bridges to prevent structural damage.

工程师在设计桥梁时必须考虑热膨胀以防止结构损坏。

作文

Thermal expansion is a fundamental concept in physics that describes how materials change their dimensions when subjected to changes in temperature. When a substance is heated, its particles gain energy and begin to move more vigorously, causing the substance to expand. This phenomenon can be observed in various materials, including metals, liquids, and gases. Understanding thermal expansion (热膨胀) is crucial in many fields, from engineering to meteorology, as it affects how structures are designed and how different materials behave under varying temperatures.For instance, engineers must account for thermal expansion (热膨胀) when constructing bridges and buildings. If they fail to consider this factor, the structures could suffer from severe damage or even collapse during extreme temperature fluctuations. Expansion joints are often incorporated into bridges to allow for the movement caused by thermal expansion (热膨胀), ensuring that the integrity of the structure is maintained.In everyday life, we can observe thermal expansion (热膨胀) in simple activities, such as cooking. When heating a metal pot on the stove, the metal expands due to the increase in temperature. This expansion can cause the lid of the pot to fit more tightly, making it difficult to remove without allowing it to cool down first. Similarly, when ice cubes are placed in a glass of water, the water level rises slightly as the ice melts, demonstrating another example of thermal expansion (热膨胀).Moreover, thermal expansion (热膨胀) plays a significant role in natural phenomena. For example, the expansion of air in our atmosphere contributes to weather patterns and changes. Warm air is less dense than cold air, which causes it to rise. This process is essential for the formation of clouds and precipitation. Understanding how thermal expansion (热膨胀) affects atmospheric conditions helps meteorologists predict weather changes more accurately.Additionally, the concept of thermal expansion (热膨胀) is critical in the field of thermodynamics. It is essential for understanding heat engines and refrigeration cycles. In these systems, the controlled expansion and contraction of gases can lead to work being done. For example, in a car engine, the combustion of fuel heats the gases inside the cylinder, causing them to expand rapidly. This expansion pushes the piston, converting thermal energy into mechanical energy.In conclusion, thermal expansion (热膨胀) is a vital concept that permeates many aspects of our lives. From the design of infrastructure to the functioning of natural systems, the effects of temperature changes on materials are significant. By studying thermal expansion (热膨胀), we can better understand and predict the behavior of materials in various environments, leading to safer designs and more efficient systems. Whether in engineering, meteorology, or everyday occurrences, the implications of thermal expansion (热膨胀) are profound and far-reaching.

热膨胀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。当物质被加热时，其粒子获得能量并开始更剧烈地运动，导致物质膨胀。这种现象可以在各种材料中观察到，包括金属、液体和气体。理解热膨胀在许多领域至关重要，从工程到气象，因为它影响结构的设计以及不同材料在不同温度下的行为。例如，工程师在建造桥梁和建筑物时必须考虑热膨胀。如果他们未能考虑这一因素，结构可能会在极端温度波动期间遭受严重损坏甚至倒塌。扩展接头通常被纳入桥梁设计，以允许由于热膨胀而导致的运动，从而确保结构的完整性得以维持。在日常生活中，我们可以在简单的活动中观察到热膨胀。当在炉子上加热金属锅时，金属由于温度升高而膨胀。这种膨胀可能会导致锅盖更紧密地贴合，使其在冷却之前难以取下。类似地，当冰块放入一杯水中时，随着冰的融化，水位略微上升，展示了另一个热膨胀的例子。此外，热膨胀在自然现象中也扮演着重要角色。例如，空气在大气中的膨胀有助于天气模式和变化。暖空气的密度低于冷空气，这使得它上升。这一过程对于云的形成和降水至关重要。理解热膨胀如何影响大气条件有助于气象学家更准确地预测天气变化。此外，热膨胀在热力学领域也是至关重要的。它对理解热机和制冷循环至关重要。在这些系统中，气体的控制膨胀和收缩可以导致工作被完成。例如，在汽车发动机中，燃料的燃烧加热气缸内的气体，使其迅速膨胀。这种膨胀推动活塞，将热能转化为机械能。总之，热膨胀是一个渗透我们生活各个方面的重要概念。从基础设施的设计到自然系统的功能，温度变化对材料的影响是显著的。通过研究热膨胀，我们可以更好地理解和预测材料在各种环境中的行为，从而导致更安全的设计和更高效的系统。无论是在工程、气象还是日常事件中，热膨胀的影响都是深远且广泛的。