thermal expansion

简明释义

热膨胀

英英释义

例句

1.In hot weather, thermal expansion 热膨胀 can lead to cracks in roads.

在炎热的天气中，热膨胀 thermal expansion可能导致道路出现裂缝。

2.The metal railings expanded due to thermal expansion 热膨胀, causing them to bend slightly.

金属栏杆因热膨胀 thermal expansion而略微弯曲。

3.Engineers must account for thermal expansion 热膨胀 when constructing pipelines.

工程师在建造管道时必须考虑热膨胀 thermal expansion。

4.Glass containers are often designed with thermal expansion 热膨胀 in mind to avoid breaking.

玻璃容器通常在设计时考虑到热膨胀 thermal expansion以避免破裂。

5.The bridge was designed to accommodate thermal expansion 热膨胀 due to temperature changes.

这座桥的设计考虑到了温度变化导致的热膨胀 thermal expansion。

作文

Thermal expansion is a fundamental concept in physics that describes how materials change in size when they are heated. When most substances are heated, their particles move more vigorously and tend to occupy a larger volume. This phenomenon can be observed in everyday life and has significant implications in engineering, construction, and various scientific applications. Understanding thermal expansion (热膨胀) is crucial for designing structures and systems that can withstand temperature variations without failing.For instance, consider a simple metal rod. When the temperature rises, the rod expands due to thermal expansion (热膨胀). If the rod is fixed at one end, the expansion can create stress within the material, potentially leading to structural failure. Engineers must account for this behavior when designing bridges, railways, and buildings, ensuring that there is enough space for expansion to occur without causing damage. Expansion joints are often incorporated into these structures to accommodate thermal expansion (热膨胀), allowing materials to expand and contract freely.Moreover, the concept of thermal expansion (热膨胀) is not limited to solids. Liquids and gases also experience this phenomenon, albeit in different ways. For example, when water is heated, it expands, which is why a pot of boiling water will overflow if it is too full. In gases, the expansion is more pronounced; as gas molecules gain heat energy, they spread out, leading to an increase in pressure if the gas is confined.The importance of thermal expansion (热膨胀) extends beyond just physical structures. In the field of technology, understanding how materials respond to temperature changes can lead to advancements in various devices. For example, thermometers rely on the principle of thermal expansion (热膨胀) of liquids like mercury or colored alcohol to measure temperature accurately. As the temperature increases, the liquid expands and rises in the calibrated tube, providing a visual indication of temperature changes.In addition, the study of thermal expansion (热膨胀) is vital in the context of climate change. As global temperatures rise, materials used in infrastructure may expand more than anticipated, leading to potential safety hazards. Therefore, scientists and engineers must continuously research and develop new materials that can better withstand the effects of thermal expansion (热膨胀) under extreme conditions.In conclusion, thermal expansion (热膨胀) is a critical concept that affects various aspects of our daily lives and technological advancements. From the design of safe and durable structures to the functioning of everyday devices, understanding how materials expand and contract with temperature changes is essential. As we continue to face challenges related to climate change and resource management, the implications of thermal expansion (热膨胀) will only become more significant, underscoring the need for ongoing research and innovation in this field.