thermal expansion

简明释义

热膨胀

英英释义

例句

1.Pipes can leak if thermal expansion is not properly managed during temperature changes.

如果在温度变化过程中没有妥善管理热膨胀，管道可能会漏水。

2.Engineers must account for thermal expansion in bridges to prevent structural damage.

工程师必须考虑桥梁中的热膨胀，以防止结构损坏。

3.In the design of railways, thermal expansion is considered to avoid buckling of tracks.

在铁路设计中，考虑到热膨胀以避免轨道翘曲。

4.The glass jar cracked because it couldn't handle the thermal expansion of the hot contents.

玻璃罐破裂是因为它无法承受热内容物的热膨胀。

5.When heated, metals undergo thermal expansion, which is the increase in size due to heat.

当金属加热时，会发生热膨胀，即由于热量而导致的尺寸增加。

作文

Thermal expansion is a fundamental concept in physics that describes how materials change in size or volume when exposed to changes in temperature. When substances are heated, their particles move more vigorously, causing them to occupy more space. This phenomenon can be observed in various materials, including metals, liquids, and gases. Understanding thermal expansion (热膨胀) is crucial for engineers and architects as it affects the design and functionality of many structures and systems.For instance, consider a bridge made of steel. As temperatures rise during the summer, the steel expands due to thermal expansion (热膨胀). If the bridge were designed without accounting for this expansion, it could lead to structural damage or even failure. Engineers must include expansion joints in the design to allow for this natural movement. These joints provide a necessary gap that accommodates the expansion and contraction of materials, ensuring the bridge remains safe and functional.Similarly, thermal expansion (热膨胀) plays a significant role in the functioning of everyday objects, such as thermometers. In a mercury thermometer, for example, the mercury expands when heated, rising up a glass tube to indicate the temperature. This principle of thermal expansion (热膨胀) allows for accurate temperature readings, which are essential in various fields, including medicine, cooking, and meteorology.In addition to practical applications, thermal expansion (热膨胀) also has implications in the natural world. For example, as ocean waters warm due to climate change, they expand, contributing to rising sea levels. This phenomenon highlights the importance of understanding thermal expansion (热膨胀) in addressing environmental issues and predicting future changes in our planet’s ecosystems.Moreover, different materials exhibit varying rates of thermal expansion (热膨胀). For instance, metals typically have a higher coefficient of thermal expansion (热膨胀) compared to ceramics or glass. This difference means that when subjected to heat, metals will expand more than ceramics or glass, which can lead to complications in composite materials where these substances are combined. Engineers must carefully consider these properties when selecting materials for projects to ensure compatibility and performance under temperature fluctuations.In conclusion, thermal expansion (热膨胀) is a vital concept that influences a wide range of scientific and engineering disciplines. It is essential for the safe design of structures, the accuracy of measuring instruments, and understanding environmental changes. By comprehensively studying thermal expansion (热膨胀), we can better prepare for the challenges posed by temperature variations in both man-made and natural systems. Recognizing the importance of this phenomenon allows us to innovate and improve the resilience of our infrastructure and technology in an ever-changing world.

热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其大小或体积。当物质被加热时，其粒子的运动更加剧烈，导致它们占据更多的空间。这一现象可以在各种材料中观察到，包括金属、液体和气体。理解热膨胀是工程师和建筑师至关重要的，因为它影响着许多结构和系统的设计和功能。例如，考虑一座由钢制成的桥梁。在夏季气温上升时，由于热膨胀，钢材会膨胀。如果桥梁的设计没有考虑到这种膨胀，可能会导致结构损坏甚至失败。工程师必须在设计中加入伸缩缝，以允许这种自然运动的发生。这些缝隙提供了一个必要的间隙，容纳材料的膨胀和收缩，确保桥梁保持安全和功能。同样，热膨胀在日常物品的功能中也起着重要作用，例如温度计。例如，在水银温度计中，当水银被加热时，它会膨胀，沿着玻璃管上升以指示温度。这个热膨胀的原理使得温度测量变得准确，这在医学、烹饪和气象等各个领域都是必不可少的。除了实际应用，热膨胀在自然界中也具有重要意义。例如，随着全球变暖，海洋水温升高，水体膨胀，导致海平面上升。这一现象突显了理解热膨胀在应对环境问题和预测我们星球生态系统未来变化中的重要性。此外，不同材料的热膨胀速率各不相同。例如，金属通常比陶瓷或玻璃具有更高的热膨胀系数。这意味着在受热时，金属的膨胀程度将大于陶瓷或玻璃，这可能导致在这些物质组合的复合材料中出现复杂情况。工程师在选择材料进行项目时，必须仔细考虑这些特性，以确保在温度波动下的兼容性和性能。总之，热膨胀是一个重要概念，影响着广泛的科学和工程学科。它对于结构的安全设计、测量仪器的准确性以及理解环境变化至关重要。通过全面研究热膨胀，我们可以更好地应对温度变化给人造和自然系统带来的挑战。认识到这一现象的重要性使我们能够在不断变化的世界中创新并提高基础设施和技术的韧性。