coefficient of linear expansion

简明释义

线膨胀系数

英英释义

例句

1.Different metals have different coefficient of linear expansion 线性膨胀系数, which affects their use in construction.

不同的金属具有不同的线性膨胀系数 coefficient of linear expansion，这影响了它们在建筑中的使用。

2.The coefficient of linear expansion 线性膨胀系数 of glass is important for applications involving temperature fluctuations.

玻璃的线性膨胀系数 coefficient of linear expansion 对于涉及温度波动的应用非常重要。

3.In thermodynamics, understanding the coefficient of linear expansion 线性膨胀系数 helps predict material behavior.

在热力学中，理解线性膨胀系数 coefficient of linear expansion 有助于预测材料的行为。

4.When designing bridges, engineers must consider the coefficient of linear expansion 线性膨胀系数 of the materials used.

在设计桥梁时，工程师必须考虑所用材料的线性膨胀系数 coefficient of linear expansion。

5.The engineer calculated the coefficient of linear expansion 线性膨胀系数 of the materials to ensure they would not warp under temperature changes.

工程师计算了材料的线性膨胀系数 coefficient of linear expansion，以确保它们在温度变化下不会变形。

作文

The concept of the coefficient of linear expansion is fundamental in the field of physics and engineering, particularly when dealing with materials that undergo changes in temperature. This coefficient quantifies how much a material expands or contracts per unit length for each degree change in temperature. Understanding this property is crucial for various applications, from construction to manufacturing. For instance, metals typically have higher coefficient of linear expansion values compared to ceramics or glass, which means they expand more significantly when heated. When engineers design structures, they must take into account the coefficient of linear expansion of the materials used. If they fail to do so, the resulting stresses from thermal expansion can lead to catastrophic failures. For example, bridges are constructed with expansion joints that allow for movement as temperatures change. These joints accommodate the expansion and contraction of materials, ensuring the integrity and safety of the structure over time. In everyday life, we can observe the effects of the coefficient of linear expansion in simple phenomena. A classic example is the way metal lids fit tightly on glass jars. When heated, the metal expands more than the glass, making it easier to remove the lid. Conversely, if the jar is cooled, the metal will contract, potentially making the lid even tighter. The coefficient of linear expansion is also important in the manufacturing of electronic components. As devices heat up during operation, the materials within them expand. If the expansion is not uniform, it can lead to mechanical stress and eventual failure of the components. Therefore, manufacturers must choose materials with compatible coefficient of linear expansion values to ensure reliability and longevity of their products. Moreover, the coefficient of linear expansion varies among different materials and is influenced by factors such as temperature range and the material's crystalline structure. For instance, polymers can exhibit significant changes in their coefficient of linear expansion depending on their molecular composition and thermal history. This variability must be considered when selecting materials for specific applications. In conclusion, the coefficient of linear expansion is a critical parameter that impacts the behavior of materials under temperature changes. Its understanding is essential for engineers and scientists alike, as it informs the design and application of materials in various fields. By accounting for this property, we can enhance the durability and performance of structures and products, ultimately leading to safer and more efficient designs. Whether in construction, manufacturing, or daily life, the implications of the coefficient of linear expansion are far-reaching and significant, underscoring its importance in both theoretical and practical contexts.

线性膨胀系数的概念在物理学和工程领域中是基础性的，特别是在处理随着温度变化而发生变化的材料时。这个系数量化了材料在每度温度变化时每单位长度的膨胀或收缩程度。理解这一特性对于各种应用至关重要，从建筑到制造。例如，金属的线性膨胀系数通常比陶瓷或玻璃高，这意味着它们在加热时会显著膨胀。当工程师设计结构时，必须考虑所用材料的线性膨胀系数。如果他们未能做到这一点，热膨胀产生的应力可能导致灾难性的失败。例如，桥梁的建造会有膨胀缝，允许随着温度变化而移动。这些缝隙可以容纳材料的膨胀和收缩，确保结构的完整性和安全性。在日常生活中，我们可以观察到线性膨胀系数的影响，例如金属盖紧紧地贴在玻璃罐上。当加热时，金属的膨胀程度大于玻璃，使得取下盖子变得更容易。相反，如果罐子被冷却，金属会收缩，可能使盖子更加紧密。线性膨胀系数在电子组件的制造中也很重要。设备在运行过程中会发热，内部材料会膨胀。如果膨胀不均匀，可能导致机械应力和最终的组件故障。因此，制造商必须选择具有兼容线性膨胀系数值的材料，以确保产品的可靠性和耐久性。此外，线性膨胀系数在不同材料之间存在差异，并受到温度范围和材料晶体结构等因素的影响。例如，聚合物的线性膨胀系数可能因其分子组成和热历史而表现出显著变化。在选择特定应用的材料时，必须考虑这种可变性。总之，线性膨胀系数是影响材料在温度变化下行为的关键参数。其理解对工程师和科学家都是至关重要的，因为它为材料在各个领域的设计和应用提供了依据。通过考虑这一特性，我们可以增强结构和产品的耐久性和性能，最终导致更安全、更高效的设计。无论是在建筑、制造还是日常生活中，线性膨胀系数的影响都广泛而重要，突显了其在理论和实践中的重要性。