thermal expansion

简明释义

热膨胀

英英释义

例句

1.In cold weather, the contraction of materials contrasts with thermal expansion 热膨胀 that occurs in heat.

在寒冷的天气中，材料的收缩与热量中发生的thermal expansion 热膨胀形成对比。

2.Engineers must consider thermal expansion 热膨胀 when designing pipelines to avoid leaks.

工程师在设计管道时必须考虑到thermal expansion 热膨胀，以避免泄漏。

3.When heated, metals expand due to thermal expansion 热膨胀, which is why railroad tracks need gaps.

当加热时，金属因thermal expansion 热膨胀而膨胀，这就是为什么铁路轨道需要留缝的原因。

4.Glass can break if it doesn't accommodate thermal expansion 热膨胀 when heated rapidly.

如果玻璃在快速加热时不适应thermal expansion 热膨胀，可能会破裂。

5.The design of bridges must account for thermal expansion 热膨胀 to prevent structural damage.

桥梁的设计必须考虑到thermal expansion 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 in size or volume when they are heated. When the temperature of a substance increases, its particles begin to vibrate more vigorously, leading to an increase in the average distance between them. This phenomenon is observed in all states of matter, including solids, liquids, and gases. For example, when metal is heated, it expands; this is why railway tracks have gaps between sections to accommodate the expansion caused by heat. The principle of thermal expansion (热膨胀) is crucial in engineering and construction, as it affects how structures behave under varying temperature conditions.In everyday life, we encounter thermal expansion (热膨胀) in various ways. A common example is the expansion of a balloon when it is warmed up. As the air inside the balloon heats up, it expands, causing the balloon to inflate. Conversely, when the balloon cools down, the air contracts, and the balloon shrinks. This simple observation illustrates the principle of thermal expansion (热膨胀) in a very relatable context.The effects of thermal expansion (热膨胀) can be both beneficial and detrimental. In the field of engineering, understanding thermal expansion (热膨胀) is essential for designing structures that can withstand temperature fluctuations without suffering damage. For instance, bridges are often designed with expansion joints that allow for movement as the materials expand and contract. If engineers did not take thermal expansion (热膨胀) into account, buildings and bridges could crack or even collapse due to the stresses imposed by temperature changes.Moreover, thermal expansion (热膨胀) also plays a significant role in natural phenomena. For instance, oceans expand when they warm, contributing to rising sea levels, which poses a threat to coastal communities. Understanding the implications of thermal expansion (热膨胀) is vital for scientists and policymakers as they address climate change and its impacts on our planet.In conclusion, thermal expansion (热膨胀) is a critical concept that affects both our daily lives and the broader world around us. From the design of infrastructure to the effects of climate change, understanding how materials expand and contract with temperature changes is essential. As we continue to explore and innovate in science and engineering, the principles of thermal expansion (热膨胀) will remain a key consideration in our efforts to create a sustainable future.