expansion coefficient

简明释义

膨胀系数

英英释义

例句

1.The expansion coefficient of glass is crucial for applications involving thermal shock.

玻璃的膨胀系数对涉及热冲击的应用至关重要。

2.The expansion coefficient of rubber is much higher than that of metals, making it suitable for seals.

橡胶的膨胀系数远高于金属，使其适合用作密封件。

3.The thermal expansion coefficient of metals varies significantly with temperature.

金属的热膨胀系数随着温度的变化而显著不同。

4.When designing bridges, engineers must consider the expansion coefficient of concrete to prevent cracking.

在设计桥梁时，工程师必须考虑混凝土的膨胀系数以防止开裂。

5.Different materials have different expansion coefficients, which can affect their compatibility in assemblies.

不同材料具有不同的膨胀系数，这可能影响它们在组件中的兼容性。

作文

The concept of the expansion coefficient is fundamental in various fields of science and engineering, particularly in thermodynamics and materials science. The expansion coefficient refers to a material's ability to change its dimensions in response to temperature variations. Understanding this property is crucial for designing structures and components that can withstand thermal changes without suffering damage. For instance, metals generally have a higher expansion coefficient than ceramics, which means they expand more when heated. This characteristic must be taken into account when constructing bridges or railways where temperature fluctuations are common. In practical applications, the expansion coefficient is often used to calculate how much a material will expand or contract with a specific temperature change. Engineers use this information to ensure that joints and connections can accommodate movement due to thermal expansion. If the expansion coefficient is not properly considered, it could lead to structural failures or malfunctions in machinery. For example, if two different materials with varying expansion coefficients are joined together, one might expand more than the other, causing stress at the junction and potentially leading to cracks or breaks.Moreover, the expansion coefficient is not constant; it can vary depending on the temperature range and the material's phase. For instance, water has a unique expansion coefficient that decreases as it approaches freezing point, which is an anomaly that is critical for aquatic life during winter months. Understanding these nuances allows scientists and engineers to make informed decisions about material selection and design processes. In conclusion, the expansion coefficient is a vital parameter that influences the behavior of materials under temperature changes. Its implications stretch across various industries, from construction to manufacturing, highlighting the importance of considering thermal properties in engineering designs. By mastering the concept of the expansion coefficient, professionals can enhance the durability and reliability of their projects, ensuring safety and efficiency in their operations. In summary, the expansion coefficient (膨胀系数) plays a critical role in understanding how materials respond to temperature changes, impacting everything from everyday objects to large-scale engineering projects. It is essential for engineers and scientists to grasp this concept thoroughly to prevent failures and optimize performance in their respective fields.

膨胀系数的概念在科学和工程的各个领域中都是基础，特别是在热力学和材料科学中。膨胀系数指的是材料在温度变化时改变其尺寸的能力。理解这一特性对于设计能够承受热变化而不受损坏的结构和组件至关重要。例如，金属通常具有比陶瓷更高的膨胀系数，这意味着它们在加热时膨胀得更多。在建造桥梁或铁路等温度波动常见的地方时，必须考虑这一特性。在实际应用中，膨胀系数常用于计算材料在特定温度变化下将扩展或收缩多少。工程师利用这些信息确保接头和连接能够适应由于热膨胀而产生的运动。如果没有正确考虑膨胀系数，可能会导致结构失效或机械故障。例如，如果将两种具有不同膨胀系数的材料连接在一起，其中一种可能比另一种膨胀得更多，从而在接缝处造成应力，可能导致裂缝或断裂。此外，膨胀系数并不是一个常数；它可能因温度范围和材料的相位而异。例如，水具有独特的膨胀系数，当接近冰点时其值会降低，这是一种异常现象，对冬季水生生物至关重要。理解这些细微差别使科学家和工程师能够对材料选择和设计过程做出明智的决策。总之，膨胀系数是影响材料在温度变化下行为的重要参数。它的影响跨越多个行业，从建筑到制造，突显了在工程设计中考虑热特性的必要性。通过掌握膨胀系数的概念，专业人士可以增强其项目的耐久性和可靠性，确保操作的安全性和效率。总而言之，膨胀系数（膨胀系数）在理解材料如何响应温度变化方面发挥着关键作用，影响从日常物品到大规模工程项目的一切。工程师和科学家必须彻底掌握这一概念，以防止故障并优化其各自领域的性能。