linear expansion

简明释义

线膨胀

英英释义

例句

1.Materials with high coefficients of linear expansion 线性膨胀 require special considerations in construction.

具有高线性膨胀系数的材料在施工中需要特别考虑。

2.Engineers must account for linear expansion 线性膨胀 when designing bridges to ensure structural integrity.

工程师在设计桥梁时必须考虑线性膨胀，以确保结构的完整性。

3.When the temperature rises, the linear expansion 线性膨胀 of the rail tracks can cause them to buckle.

当温度升高时，轨道的线性膨胀可能导致它们翘曲。

4.The linear expansion 线性膨胀 of metals can lead to gaps in joints if not properly managed.

如果没有妥善管理，金属的线性膨胀可能导致接头出现间隙。

5.The concept of linear expansion 线性膨胀 is critical in understanding how materials behave when heated.

线性膨胀的概念对理解材料在加热时的行为至关重要。

作文

The phenomenon of linear expansion is a fundamental concept in physics that describes how materials change in size when subjected to temperature variations. When an object is heated, its particles begin to vibrate more vigorously, and as a result, they tend to occupy more space. This increase in size is particularly noticeable in solids, where the dimensions expand uniformly along a specific direction, hence the term linear expansion (线性膨胀). For instance, if you take a metal rod and heat it, you will observe that its length increases. This behavior can be quantified using the formula: ΔL = αL₀ΔT, where ΔL represents the change in length, α is the coefficient of linear expansion (线性膨胀系数), L₀ is the original length, and ΔT is the change in temperature.Understanding linear expansion (线性膨胀) is crucial in various engineering applications. For example, when designing bridges or railways, engineers must account for the expansion of materials due to temperature changes. If they fail to do so, the structures could warp or even fail under stress. Expansion joints are often incorporated into these designs to allow for movement and prevent damage.In addition to engineering, linear expansion (线性膨胀) also plays a significant role in everyday life. Consider the simple act of cooking. When a pot is placed on the stove, the metal expands due to the heat, which can cause the lid to fit more tightly. Similarly, when cooling down, the metal contracts back to its original size. This principle is not only limited to metals but applies to various materials, including plastics and wood, although the rate of expansion may differ.Moreover, linear expansion (线性膨胀) has implications in scientific research. For instance, in the field of astronomy, when studying the expansion of the universe, scientists often rely on principles similar to linear expansion (线性膨胀) to understand how celestial bodies move and interact with one another. The concept helps in explaining how galaxies are moving away from each other, indicating that the universe is expanding over time.In conclusion, linear expansion (线性膨胀) is not merely an abstract concept confined to the realms of physics; it is a phenomenon that influences various aspects of our daily lives and technological advancements. From the construction of infrastructure to the culinary arts, understanding linear expansion (线性膨胀) enables us to make informed decisions and designs that accommodate the natural behaviors of materials under different temperatures. As we continue to explore and innovate, the principles of linear expansion (线性膨胀) will remain integral to our understanding of the physical world.

现象线性膨胀是物理学中的一个基本概念，描述了材料在温度变化时如何改变尺寸。当物体被加热时，其粒子开始更加剧烈地振动，因此它们往往占据更多的空间。这种尺寸的增加在固体中尤为明显，其中尺寸沿特定方向均匀扩展，因此称为线性膨胀。例如，如果你取一根金属棒并加热，你会观察到它的长度增加。这种行为可以用公式ΔL = αL₀ΔT来量化，其中ΔL表示长度的变化，α是线性膨胀系数，L₀是原始长度，ΔT是温度变化。理解线性膨胀在各种工程应用中至关重要。例如，在设计桥梁或铁路时，工程师必须考虑材料因温度变化而扩展。如果他们未能做到这一点，结构可能会变形甚至在压力下失败。扩展接头通常被纳入这些设计中，以允许运动并防止损坏。除了工程，线性膨胀在日常生活中也发挥着重要作用。考虑到简单的烹饪行为。当锅放在炉子上时，金属因热量而膨胀，这可能导致盖子更紧密地贴合。类似地，当冷却时，金属又收缩回原来的大小。这个原理不仅限于金属，还适用于各种材料，包括塑料和木材，尽管膨胀速率可能有所不同。此外，线性膨胀在科学研究中也具有重要意义。例如，在天文学领域，当研究宇宙的膨胀时，科学家们常常依赖于与线性膨胀相似的原理来理解天体如何相互移动和相互作用。这个概念有助于解释星系如何彼此远离，表明宇宙正在随时间扩展。总之，线性膨胀不仅仅是一个局限于物理领域的抽象概念；它是影响我们日常生活和技术进步各个方面的现象。从基础设施的建设到烹饪艺术，理解线性膨胀使我们能够做出明智的决策和设计，以适应材料在不同温度下的自然行为。随着我们继续探索和创新，线性膨胀的原理将继续对我们理解物理世界至关重要。