linear expansion

简明释义

线性膨胀

英英释义

例句

1.The linear expansion 线性膨胀 of the rails can lead to buckling in extreme heat.

轨道的线性膨胀可能会导致在极端高温下发生翘曲。

2.Thermometers rely on the principle of linear expansion 线性膨胀 of liquids to measure temperature accurately.

温度计依赖于液体的线性膨胀原理来准确测量温度。

3.Glass expands with linear expansion 线性膨胀 when exposed to high temperatures.

玻璃在高温下会随着线性膨胀而膨胀。

4.When heated, metals undergo linear expansion 线性膨胀, causing them to elongate.

当加热时，金属会发生线性膨胀，导致它们延长。

5.Engineers must account for linear expansion 线性膨胀 when designing bridges to prevent structural damage.

工程师在设计桥梁时必须考虑线性膨胀以防止结构损坏。

作文

The concept of linear expansion is fundamental in the study of materials and their behavior under varying temperatures. When a solid object is heated, its particles gain kinetic energy and begin to move apart from each other. This movement results in an increase in the length of the object, a phenomenon known as linear expansion. For example, consider a metal rod placed in a hot environment. As the temperature rises, the rod expands uniformly along its length. This principle is crucial in engineering and construction, where materials must be selected and designed to accommodate changes in temperature without leading to structural failure.Understanding linear expansion is essential for engineers who design bridges, railways, and buildings. For instance, railway tracks are laid with small gaps between them to allow for linear expansion during hot weather. If these gaps were not present, the expanding tracks could buckle or warp, leading to potentially dangerous situations. Similarly, in building construction, materials like concrete and steel are chosen based on their thermal expansion properties to ensure that they can withstand temperature fluctuations over time.The mathematical representation of linear expansion can be expressed through the formula: ΔL = αL₀ΔT, where ΔL is the change in length, α is the coefficient of linear expansion, L₀ is the original length, and ΔT is the change in temperature. This equation allows engineers to predict how much a material will expand or contract when subjected to temperature changes, enabling them to design structures that maintain their integrity under various conditions.Furthermore, linear expansion is not limited to metals; it also applies to other materials such as plastics and wood. Each material has its own coefficient of linear expansion, which indicates how much it will expand per degree of temperature increase. For example, wood typically has a lower coefficient of linear expansion compared to metals, meaning it expands less with temperature changes. This property is particularly important in applications where dimensional stability is critical, such as in furniture making or musical instrument manufacturing.In summary, the understanding of linear expansion is vital across various fields, particularly in engineering and construction. It helps predict how materials behave under thermal stress, ensuring safety and functionality in everyday structures. By considering linear expansion in design and planning, engineers can create resilient systems that can endure the challenges posed by environmental changes. Thus, mastering the concept of linear expansion not only enhances our knowledge of material science but also contributes to the development of safer and more efficient infrastructures.

线性膨胀的概念在材料及其在不同温度下的行为研究中是基础性的。当固体物体被加热时，其粒子获得动能并开始彼此间隔开。这种运动导致物体长度的增加，这种现象称为线性膨胀。例如，考虑一下放置在热环境中的金属棒。随着温度的升高，金属棒沿其长度均匀地膨胀。这个原理在工程和建筑中至关重要，因为必须选择和设计材料以适应温度变化，而不会导致结构失效。理解线性膨胀对于设计桥梁、铁路和建筑物的工程师来说至关重要。例如，铁路轨道之间会留有小间隙，以允许在炎热天气中的线性膨胀。如果没有这些间隙，膨胀的轨道可能会翘曲或弯曲，导致潜在的危险情况。同样，在建筑施工中，混凝土和钢铁等材料是根据它们的热膨胀特性来选择的，以确保它们能够承受随时间变化的温度波动。线性膨胀的数学表示可以通过公式表示：ΔL = αL₀ΔT，其中ΔL是长度的变化，α是线性膨胀系数，L₀是原始长度，ΔT是温度变化。这一方程使工程师能够预测材料在温度变化时将扩展或收缩多少，从而使他们能够设计在各种条件下保持完整性的结构。此外，线性膨胀不仅限于金属，它也适用于其他材料，如塑料和木材。每种材料都有自己的线性膨胀系数，表明在每度温度增加时它将扩展多少。例如，木材的线性膨胀系数通常低于金属，这意味着它在温度变化时膨胀得更少。这一特性在需要尺寸稳定性的应用中尤为重要，例如家具制造或乐器制造。总之，理解线性膨胀在各个领域，特别是在工程和建筑中至关重要。它有助于预测材料在热应力下的行为，确保日常结构的安全性和功能性。通过在设计和规划中考虑线性膨胀，工程师可以创建能够承受环境变化挑战的坚韧系统。因此，掌握线性膨胀的概念不仅增强了我们对材料科学的认识，还促进了更安全、更高效基础设施的发展。