coefficient of expansion

简明释义

膨胀系数

英英释义

例句

1.Understanding the coefficient of expansion helps prevent structural failures in buildings.

理解膨胀系数有助于防止建筑物结构故障。

2.Different materials have different coefficients of expansion, which affects their performance in construction.

不同材料具有不同的膨胀系数，这影响它们在建筑中的表现。

3.The engineer calculated the coefficient of expansion to determine how much the metal would expand with temperature changes.

工程师计算了膨胀系数以确定金属在温度变化时会膨胀多少。

4.When designing bridges, engineers must consider the coefficient of expansion of the materials used.

在设计桥梁时，工程师必须考虑所用材料的膨胀系数。

5.The coefficient of expansion for glass is significantly lower than that of metals.

玻璃的膨胀系数明显低于金属。

作文

The concept of coefficient of expansion is fundamental in the field of materials science and engineering. It refers to the degree to which a material expands when it is heated and contracts when it cools. This property is crucial for understanding how different materials behave under varying temperature conditions. For example, metals usually have a higher coefficient of expansion than ceramics or glass, which means they expand more significantly when exposed to heat. In practical applications, the coefficient of expansion plays a vital role in construction and manufacturing processes. Engineers must consider this property when designing structures that will experience temperature fluctuations. For instance, bridges are designed with expansion joints to accommodate the expansion and contraction of materials due to temperature changes. Without these joints, the structural integrity of the bridge could be compromised, leading to potential failures. Moreover, the coefficient of expansion is not uniform across all materials; it can vary significantly based on the composition and structure of the material. For example, aluminum has a higher coefficient of expansion compared to steel, which means that aluminum components will expand and contract more than steel components under the same temperature changes. This difference must be taken into account when joining different materials together, such as in composite structures or when using fasteners. In the realm of everyday life, the coefficient of expansion is also relevant. Consider the case of a glass bottle filled with liquid. If the bottle is heated, the glass expands, but the liquid inside may not expand at the same rate. This difference in expansion can create pressure within the bottle, potentially leading to breakage. Understanding the coefficient of expansion of both the glass and the liquid can help in designing safer containers. Furthermore, in the context of climate change and environmental science, the coefficient of expansion is significant when discussing sea-level rise. As ocean waters warm, they expand, contributing to rising sea levels. The thermal expansion of water is a direct result of its coefficient of expansion, which indicates how much the water will expand per degree of temperature increase. This phenomenon has serious implications for coastal cities and ecosystems. In conclusion, the coefficient of expansion is a critical parameter across various fields, from engineering to environmental science. Its implications are far-reaching, affecting everything from the design of infrastructure to our understanding of natural phenomena. By grasping the importance of the coefficient of expansion, we can better appreciate the complexities of material behavior and the challenges posed by changing temperatures in our world.

“膨胀系数”这一概念在材料科学和工程领域中是基础性的。它指的是材料在加热时的膨胀程度以及在冷却时的收缩程度。这一特性对于理解不同材料在不同温度条件下的行为至关重要。例如，金属通常具有比陶瓷或玻璃更高的“膨胀系数”，这意味着它们在暴露于热量时会显著膨胀。在实际应用中，“膨胀系数”在建筑和制造过程中发挥着重要作用。工程师在设计会经历温度波动的结构时，必须考虑这一特性。例如，桥梁设计时会设置膨胀缝，以适应材料因温度变化而膨胀和收缩。如果没有这些缝隙，桥梁的结构完整性可能会受到损害，导致潜在的故障。此外，“膨胀系数”在不同材料之间并不均匀；它可以根据材料的成分和结构显著变化。例如，铝的“膨胀系数”高于钢，这意味着在相同的温度变化下，铝部件将比钢部件膨胀和收缩得更多。在将不同材料连接在一起时，例如在复合结构或使用紧固件时，必须考虑这种差异。在日常生活中，“膨胀系数”同样相关。以一个装满液体的玻璃瓶为例。如果瓶子被加热，玻璃会膨胀，但瓶内的液体可能不会以相同的速度膨胀。这种膨胀差异可能会在瓶内产生压力，潜在地导致破裂。理解玻璃和液体的“膨胀系数”可以帮助设计更安全的容器。此外，在气候变化和环境科学的背景下，“膨胀系数”在讨论海平面上升时也很重要。随着海洋水温升高，水体膨胀，导致海平面上升。水的热膨胀直接源于其“膨胀系数”，该系数指示水在每增加一度温度时将膨胀多少。这一现象对沿海城市和生态系统具有严重影响。总之，“膨胀系数”是各个领域中的关键参数，从工程到环境科学。它的影响深远，涉及从基础设施设计到我们对自然现象的理解。通过掌握“膨胀系数”的重要性，我们可以更好地理解材料行为的复杂性以及在我们世界中因温度变化而带来的挑战。