coefficient of linear expansion

简明释义

线膨胀系数

英英释义

例句

1.Knowing the coefficient of linear expansion 线性膨胀系数 helps in predicting how materials will behave under temperature changes.

了解线性膨胀系数 coefficient of linear expansion 有助于预测材料在温度变化下的表现。

2.The coefficient of linear expansion 线性膨胀系数 for glass is much lower than that of aluminum.

玻璃的线性膨胀系数 coefficient of linear expansion 远低于铝的。

3.Different materials have different coefficients of linear expansion 线性膨胀系数, which can affect their performance in varying temperatures.

不同材料具有不同的线性膨胀系数 coefficients of linear expansion，这会影响它们在不同温度下的性能。

4.The engineer calculated the coefficient of linear expansion 线性膨胀系数 of the metal to ensure it would fit properly in the structure.

工程师计算了金属的线性膨胀系数 coefficient of linear expansion，以确保它能在结构中合适地安装。

5.When designing bridges, it's crucial to consider the coefficient of linear expansion 线性膨胀系数 of the materials used.

在设计桥梁时，考虑所用材料的线性膨胀系数 coefficient of linear expansion 是至关重要的。

作文

The concept of thermal expansion is fundamental in physics and engineering, particularly when dealing with materials that are subjected to temperature changes. One of the key parameters in understanding how materials expand is the coefficient of linear expansion. This coefficient quantifies how much a material will expand per unit length for each degree of temperature increase. In simpler terms, it tells us how much longer a material will become when it is heated. When we think about everyday applications of the coefficient of linear expansion, we can consider the design of bridges and railways. These structures must accommodate the expansion and contraction of materials as temperatures fluctuate throughout the seasons. For instance, steel has a relatively high coefficient of linear expansion, which means it expands significantly when heated. Engineers take this into account by incorporating expansion joints in bridges, allowing for movement without causing damage. Similarly, in the case of railroads, tracks are laid with slight gaps to allow for thermal expansion. If these gaps were not present, the tracks could buckle on hot days due to the increased length from heat. This practical application of the coefficient of linear expansion ensures the safety and functionality of transportation systems. In addition to infrastructure, the coefficient of linear expansion is crucial in manufacturing processes. For example, when creating composite materials, engineers must know how different substances will react to temperature changes. If two materials with different coefficients of linear expansion are bonded together, one may expand more than the other, leading to stress and potential failure at the interface. This is particularly important in electronics, where components can be sensitive to thermal fluctuations. Moreover, the coefficient of linear expansion is also relevant in the field of thermodynamics. Understanding how materials behave under temperature changes can influence energy efficiency in various systems, including engines and refrigeration units. For example, when designing an engine, engineers must ensure that the materials used can withstand the thermal expansion that occurs during operation. Failure to account for this can lead to mechanical failures or decreased performance. In conclusion, the coefficient of linear expansion is a vital concept in both theoretical and applied physics. It plays a significant role in the design and functioning of everyday structures and devices. By understanding how materials expand and contract with temperature changes, engineers and scientists can create safer, more efficient designs. As we continue to innovate and develop new technologies, the importance of the coefficient of linear expansion will only grow, ensuring that we can effectively manage the challenges posed by thermal expansion.

热膨胀的概念在物理和工程学中是基础性的，尤其是在处理受到温度变化影响的材料时。理解材料如何膨胀的一个关键参数是线性膨胀系数。这个系数量化了每单位长度在每度温度增加时材料将膨胀多少。简单来说，它告诉我们当材料被加热时，会变得多长。当我们考虑线性膨胀系数的日常应用时，可以想到桥梁和铁路的设计。这些结构必须适应材料在季节变化中的膨胀和收缩。例如，钢材的线性膨胀系数相对较高，这意味着它在加热时会显著膨胀。工程师考虑到这一点，通过在桥梁中加入膨胀缝，使其能够在不造成损坏的情况下移动。类似地，在铁路的情况下，轨道铺设时会留有微小的间隙，以允许热膨胀。如果没有这些间隙，轨道在炎热的日子里可能会因热量导致的长度增加而翘曲。对线性膨胀系数的这种实际应用确保了交通系统的安全性和功能性。除了基础设施，线性膨胀系数在制造过程中也至关重要。例如，在创建复合材料时，工程师必须知道不同物质在温度变化下的反应。如果两个具有不同线性膨胀系数的材料粘合在一起，其中一个可能比另一个膨胀得更多，从而导致界面处的应力和潜在故障。这在电子产品中特别重要，因为组件可能对热波动敏感。此外，线性膨胀系数在热力学领域也相关。理解材料在温度变化下的行为可以影响各种系统的能效，包括发动机和制冷设备。例如，在设计发动机时，工程师必须确保所用材料能够承受在操作过程中发生的热膨胀。如果未能考虑这一点，可能会导致机械故障或性能下降。总之，线性膨胀系数是理论和应用物理学中的一个重要概念。它在日常结构和设备的设计和功能中扮演着重要角色。通过理解材料如何随温度变化而膨胀和收缩，工程师和科学家可以创造出更安全、更高效的设计。随着我们继续创新和开发新技术，线性膨胀系数的重要性只会增加，确保我们能够有效应对热膨胀带来的挑战。