thermal expansion

简明释义

热膨胀

英英释义

例句

1.When metals are heated, they undergo thermal expansion 热膨胀, which can cause them to fit loosely in their joints.

当金属被加热时，它们会经历热膨胀，这可能导致它们在接头中松动。

2.Glass is sensitive to thermal expansion 热膨胀, which is why it can shatter if exposed to sudden temperature changes.

玻璃对热膨胀很敏感，这就是为什么它在突然温度变化时可能会破裂。

3.The thermal expansion 热膨胀 of concrete can lead to cracks if proper expansion joints are not used.

如果没有适当的伸缩缝，混凝土的热膨胀可能会导致裂缝。

4.Engineers must account for 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。

5.In thermodynamics, understanding thermal expansion 热膨胀 is crucial for predicting the behavior of materials at different temperatures.

在热力学中，理解热膨胀对于预测材料在不同温度下的行为至关重要。

作文

Thermal expansion is a fundamental concept in physics that describes how materials change in size or volume when subjected to changes in temperature. As the temperature of a substance increases, its particles begin to move more vigorously, causing the substance to expand. This phenomenon can be observed in various materials, including metals, liquids, and gases. For example, when a metal rod is heated, it will lengthen due to the increased kinetic energy of its atoms. This property of materials is crucial in many applications, from engineering to everyday life.One common example of thermal expansion (热膨胀) is seen in the construction of bridges. Engineers must account for the expansion and contraction of materials due to temperature changes. If they do not consider thermal expansion (热膨胀), the bridge could suffer structural damage over time, especially in regions with extreme temperature variations. Expansion joints are often incorporated into bridge designs specifically to accommodate these changes, allowing the structure to move without compromising its integrity.Another area where thermal expansion (热膨胀) plays a significant role is in the manufacturing of glass. When glass is heated during the production process, it expands. If it cools too quickly, it can shatter due to the stress created by uneven temperatures. Therefore, manufacturers must carefully control the heating and cooling processes to prevent breakage. This careful management of thermal expansion (热膨胀) ensures that the final product is both durable and safe for use.In everyday life, we encounter thermal expansion (热膨胀) in simple scenarios as well. For instance, when cooking, a lid on a pot may become difficult to remove after boiling water. This is because the steam inside the pot heats the lid, causing it to expand. The increased pressure from the steam can create a tight seal, making it hard to lift the lid off. Understanding thermal expansion (热膨胀) helps us recognize why this happens and how to safely manage such situations in the kitchen.Furthermore, thermal expansion (热膨胀) is critical in the field of thermodynamics, where scientists study the relationships between heat, work, and energy. The laws of thermodynamics govern how energy is transferred and transformed, and thermal expansion (热膨胀) is an essential consideration in these processes. For example, in engines, the expansion of gases due to heat is what drives pistons and ultimately powers vehicles. If engineers ignore the effects of thermal expansion (热膨胀), it could lead to inefficient engine performance or even catastrophic failures.In conclusion, thermal expansion (热膨胀) is a vital concept that affects many aspects of our lives, from the buildings we inhabit to the vehicles we drive. Understanding how materials respond to changes in temperature allows us to design better structures, create safer products, and enhance our daily experiences. As we continue to innovate and develop new technologies, the principles of thermal expansion (热膨胀) will remain essential in guiding our efforts to harness the power of heat and energy effectively.