heat expansion

简明释义

热膨胀

英英释义

例句

1.In construction, understanding heat expansion 热膨胀 is crucial for laying foundations.

在建筑中，理解热膨胀对于基础的铺设至关重要。

2.When working with glass, it's important to consider heat expansion 热膨胀 to prevent cracking.

在处理玻璃时，考虑到热膨胀是很重要的，以防止开裂。

3.The pipes were fitted with expansion joints to handle heat expansion 热膨胀 in the plumbing system.

管道配备了膨胀接头以应对管道系统中的热膨胀。

4.During a hot day, the metal railings expanded due to heat expansion 热膨胀.

在炎热的日子里，金属栏杆因热膨胀而膨胀。

5.The engineer explained that the bridge was designed to accommodate heat expansion 热膨胀 during summer.

工程师解释说，桥梁的设计考虑了夏季的热膨胀。

作文

Heat expansion, or 热膨胀, is a fundamental concept in physics that describes how materials change in size when exposed to changes in temperature. When an object is heated, its particles gain energy and begin to move more vigorously. This increased movement causes the particles to push against each other, resulting in an overall increase in the distance between them. As a result, the material expands. This phenomenon can be observed in various materials including metals, liquids, and gases. Understanding 热膨胀 is crucial for engineers and architects when designing structures, as they must account for the expansion and contraction that occurs with temperature fluctuations.For example, consider a simple metal rod. When the rod is subjected to heat, perhaps from sunlight or a flame, it will expand in length. If this metal rod is part of a larger structure, such as a bridge, the engineers must ensure that there is enough space for the rod to expand without causing damage to the bridge itself. Failure to accommodate 热膨胀 could lead to structural failure, which could be catastrophic.Moreover, 热膨胀 is not limited to solids. Liquids also experience this phenomenon. For instance, when water is heated, it expands and occupies more volume. This is why when you heat water in a pot, the level of water rises slightly. In contrast, when water cools down, it contracts and takes up less space. This property of water is particularly important in nature, as it affects weather patterns and aquatic ecosystems.Gases, too, exhibit 热膨胀. When gas is heated, it expands significantly. This principle is utilized in hot air balloons, where the air inside the balloon is heated, causing it to expand and become less dense than the cooler air outside. As a result, the balloon rises. This application of 热膨胀 showcases how understanding this concept can lead to innovative technologies.In everyday life, we encounter 热膨胀 regularly. For example, when metal lids are stuck on jars, running hot water over the lid can cause it to expand slightly, making it easier to open. Similarly, railway tracks are laid with small gaps to allow for 热膨胀 during hot weather. Without these considerations, the tracks could warp or buckle, leading to dangerous situations for trains.In conclusion, 热膨胀 is a vital concept that affects a wide range of materials and applications. From engineering to everyday occurrences, understanding how and why materials expand and contract with temperature changes is essential. By considering 热膨胀 in design and daily activities, we can prevent potential problems and harness this natural phenomenon for practical uses. As we continue to explore the properties of materials, the significance of 热膨胀 will remain a key area of study in science and engineering.

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尺寸。当一个物体被加热时，其粒子获得能量并开始更剧烈地运动。这种运动增加导致粒子相互推挤，从而使它们之间的距离总体增加。因此，材料会膨胀。这个现象可以在各种材料中观察到，包括金属、液体和气体。理解热膨胀对工程师和建筑师在设计结构时至关重要，因为他们必须考虑随温度波动而发生的膨胀和收缩。例如，考虑一个简单的金属杆。当金属杆受到热量的影响时，可能是来自阳光或火焰，它将会在长度上膨胀。如果这个金属杆是更大结构的一部分，比如一座桥，工程师必须确保有足够的空间让杆膨胀而不会对桥本身造成损害。如果不考虑热膨胀，可能会导致结构失败，这可能是灾难性的。此外，热膨胀不仅限于固体。液体也会经历这种现象。例如，当水被加热时，它会膨胀并占据更多的体积。这就是为什么当你在锅里加热水时，水位会略微上升。相反，当水冷却时，它会收缩并占据更少的空间。水的这一特性在自然界中尤为重要，因为它影响天气模式和水生生态系统。气体同样表现出热膨胀。当气体被加热时，它会显著膨胀。这个原理被应用于热气球中，热气球内部的空气被加热，导致其膨胀并变得比外部较冷的空气密度小。因此，气球会上升。热膨胀的这一应用展示了理解这一概念如何能够带来创新技术。在日常生活中，我们经常遇到热膨胀。例如，当金属盖卡在罐子上时，用热水冲洗盖子可以使其稍微膨胀，从而更容易打开。同样，铁路轨道铺设时留有小缝隙，以便在炎热天气中允许热膨胀。如果没有这些考虑，轨道可能会弯曲或翘曲，导致火车出现危险情况。总之，热膨胀是一个重要的概念，影响着各种材料和应用。从工程到日常事件，理解材料如何以及为什么随着温度变化而膨胀和收缩是至关重要的。通过在设计和日常活动中考虑热膨胀，我们可以防止潜在的问题，并利用这一自然现象进行实际应用。随着我们继续探索材料的性质，热膨胀的重要性仍将是科学和工程研究的关键领域。