linear expansion

简明释义

线膨胀

英英释义

例句

1.The linear expansion 线性膨胀 of metals can lead to significant changes in dimensions when heated.

金属的线性膨胀在加热时会导致尺寸的显著变化。

2.In the construction of railways, linear expansion 线性膨胀 of steel tracks must be considered to avoid buckling.

在铁路建设中，必须考虑钢轨的线性膨胀以避免翘曲。

3.The engineer explained how the bridge was designed to accommodate linear expansion 线性膨胀 due to temperature changes.

工程师解释了桥梁如何设计以适应由于温度变化而导致的线性膨胀。

4.Thermometers operate on the principle of linear expansion 线性膨胀 of liquids.

温度计的工作原理是基于液体的线性膨胀。

5.The scientist measured the linear expansion 线性膨胀 of different materials under heat.

科学家测量了不同材料在加热下的线性膨胀。

作文

Understanding the concept of linear expansion is crucial in various fields of science and engineering. Linear expansion refers to the phenomenon where a material changes its dimensions in a linear manner when subjected to temperature changes. This property is particularly significant in the design and construction of structures, as it affects how materials behave under varying thermal conditions. For instance, metals typically expand when heated and contract when cooled. This behavior can lead to significant issues if not properly accounted for in engineering projects.In everyday life, we can observe linear expansion in action. A common example is the expansion of metal railway tracks during hot weather. If these tracks are laid without any allowance for expansion, they can buckle and create dangerous conditions for trains. Engineers must calculate the expected temperature ranges and design joints that allow for movement, ensuring safety and functionality.The formula for linear expansion is expressed as: ΔL = αL0ΔT, where ΔL represents the change in length, α is the coefficient of linear expansion specific to the material, L0 is the original length, and ΔT is the change in temperature. This equation highlights how different materials respond differently to temperature changes, emphasizing the importance of understanding the properties of materials used in construction and manufacturing.In addition to engineering, linear expansion plays a role in various scientific applications. For example, in thermodynamics, understanding how gases expand and contract with temperature changes is essential for developing efficient engines and refrigeration systems. The principles of linear expansion also apply to liquids and solids, making it a fundamental concept across multiple disciplines.Moreover, the implications of linear expansion extend to environmental considerations. As global temperatures rise due to climate change, the expansion of materials in infrastructure could lead to increased maintenance costs and risks of failure. It becomes imperative for engineers to incorporate climate resilience into their designs, taking into account the potential for greater thermal expansion in the future.In conclusion, linear expansion is a vital concept that impacts various aspects of our lives, from the construction of buildings and bridges to the functioning of everyday objects. By understanding this phenomenon, we can better prepare for the challenges it presents in engineering and environmental contexts. The ability to predict and accommodate linear expansion ensures safety, efficiency, and longevity in the materials we use. Therefore, it is essential for students and professionals alike to grasp the principles of linear expansion and apply them effectively in their respective fields.

理解线性膨胀的概念在科学和工程的各个领域都至关重要。线性膨胀是指材料在受到温度变化时，其尺寸以线性方式改变的现象。这一特性在结构设计和建造中尤为重要，因为它影响材料在不同热条件下的行为。例如，金属通常在加热时膨胀，而在冷却时收缩。如果在工程项目中没有正确考虑这种行为，可能会导致重大的问题。在日常生活中，我们可以观察到线性膨胀的实际应用。一个常见的例子是金属铁路轨道在炎热天气下的膨胀。如果这些轨道在铺设时没有留出膨胀的余地，它们可能会翘曲，从而对列车造成危险。工程师必须计算预期的温度范围，并设计允许移动的接头，以确保安全和功能。线性膨胀的公式表示为：ΔL = αL0ΔT，其中ΔL表示长度变化，α是特定材料的线性膨胀系数，L0是原始长度，ΔT是温度变化。这个方程突出了不同材料对温度变化反应的差异，强调了理解所用材料特性的必要性。除了工程学，线性膨胀在各种科学应用中也发挥着作用。例如，在热力学中，理解气体如何随温度变化而膨胀和收缩对于开发高效的发动机和制冷系统至关重要。线性膨胀的原理同样适用于液体和固体，使其成为多个学科的基本概念。此外，线性膨胀的影响还延伸到环境考虑。随着全球气温因气候变化而上升，基础设施中材料的膨胀可能导致更高的维护成本和故障风险。因此，工程师必须在设计中融入气候韧性，考虑未来可能出现的更大热膨胀。总之，线性膨胀是一个重要的概念，影响着我们生活的各个方面，从建筑和桥梁的建设到日常物品的功能。通过理解这一现象，我们可以更好地应对工程和环境背景下所带来的挑战。预测和适应线性膨胀的能力确保了我们使用材料的安全性、效率和耐久性。因此，学生和专业人士都必须掌握线性膨胀的原理，并在各自的领域中有效应用。