coefficient of linear expansion

简明释义

线膨胀系数

英英释义

例句

1.When designing bridges, engineers must consider the coefficient of linear expansion 线膨胀系数 of the materials used.

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

2.The coefficient of linear expansion 线膨胀系数 of glass is different from that of steel, which can affect building designs.

玻璃的线膨胀系数 coefficient of linear expansion与钢材不同，这可能会影响建筑设计。

3.Understanding the coefficient of linear expansion 线膨胀系数 helps in predicting how materials will behave under temperature changes.

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

4.The engineer calculated the coefficient of linear expansion 线膨胀系数 of the metal to ensure it would not warp under heat.

工程师计算了金属的线膨胀系数 coefficient of linear expansion，以确保在热量下不会变形。

5.Different materials have different coefficient of linear expansion 线膨胀系数, which is crucial for construction projects.

不同材料具有不同的线膨胀系数 coefficient of linear expansion，这对建筑项目至关重要。

作文

The concept of thermal expansion is fundamental in the study of materials and their behavior under varying temperature conditions. One of the key parameters that describe this phenomenon is the coefficient of linear expansion. This coefficient quantifies how much a material expands per unit length for each degree of temperature increase. Understanding the coefficient of linear expansion is crucial for engineers and architects when designing structures and components that will experience temperature fluctuations.When a material is heated, its atoms vibrate more vigorously and tend to move apart from one another, leading to an increase in size. The coefficient of linear expansion is typically expressed in units of length per degree temperature change, such as meters per meter per degree Celsius (m/m/°C). Different materials have different coefficients, which means they expand at different rates when exposed to heat. For instance, metals generally have higher coefficients of linear expansion compared to ceramics or glass.In practical applications, the coefficient of linear expansion plays a significant role in various industries. For example, in construction, steel beams are often used in buildings because of their strength. However, if the coefficient of linear expansion is not taken into account, the beams may warp or buckle during extreme temperature changes. This can lead to structural failures, which could have catastrophic consequences.Another example can be found in the manufacturing of precision instruments, such as thermometers and barometers. These devices rely on accurate measurements, and any expansion or contraction due to temperature changes must be accounted for. Engineers must select materials with appropriate coefficient of linear expansion values to ensure that these instruments function correctly across a range of temperatures.Moreover, the coefficient of linear expansion is also important in everyday items, such as bridges and railway tracks. Expansion joints are often incorporated into these structures to allow for the natural expansion and contraction that occurs with temperature changes. Without these joints, the stress caused by thermal expansion could lead to cracks and damage, ultimately compromising the integrity and safety of the structure.In conclusion, the coefficient of linear expansion is a vital concept in material science and engineering. It provides essential information about how different materials react to temperature changes, which is crucial for ensuring the safety and functionality of various structures and devices. By understanding and applying the principles associated with the coefficient of linear expansion, engineers and designers can create safer, more reliable products and infrastructures that stand the test of time. As technology advances and we encounter new materials, the importance of understanding thermal expansion and its coefficients will only continue to grow, highlighting the need for ongoing research and education in this field.

热膨胀的概念在材料研究及其在不同温度条件下的行为中是基础性的。描述这一现象的关键参数之一是线性膨胀系数。这个系数量化了材料在每升高一度温度时，单位长度的扩展程度。理解线性膨胀系数对于工程师和建筑师在设计将经历温度波动的结构和组件时至关重要。当材料被加热时，其原子的振动会更加剧烈，并倾向于彼此分开，从而导致尺寸增加。线性膨胀系数通常以每度温度变化的长度单位表示，例如米每米每摄氏度（m/m/°C）。不同材料具有不同的系数，这意味着它们在受到热量时的扩展速率不同。例如，金属通常比陶瓷或玻璃具有更高的线性膨胀系数。在实际应用中，线性膨胀系数在各个行业中都发挥着重要作用。例如，在建筑中，钢梁常用于建筑物，因为它们强度高。然而，如果不考虑线性膨胀系数，在极端温度变化期间，钢梁可能会变形或翘曲。这可能导致结构故障，而后果可能是灾难性的。另一个例子可以在精密仪器的制造中找到，例如温度计和气压计。这些设备依赖于准确的测量，任何由于温度变化造成的膨胀或收缩都必须被考虑。工程师必须选择具有适当线性膨胀系数值的材料，以确保这些仪器在各种温度范围内正常工作。此外，线性膨胀系数在日常物品中也很重要，比如桥梁和铁路轨道。扩展接头通常被纳入这些结构中，以允许因温度变化而发生的自然膨胀和收缩。如果没有这些接头，由热膨胀引起的应力可能会导致裂缝和损坏，最终危及结构的完整性和安全性。总之，线性膨胀系数是材料科学和工程中的一个重要概念。它提供了有关不同材料如何对温度变化作出反应的重要信息，这对确保各种结构和设备的安全性和功能性至关重要。通过理解和应用与线性膨胀系数相关的原则，工程师和设计师可以创建更安全、更可靠的产品和基础设施，能够经受时间的考验。随着技术的发展，我们遇到的新材料不断增加，理解热膨胀及其系数的重要性只会继续增长，这突显了在这一领域持续研究和教育的必要性。