thermal contraction

简明释义

热收缩

英英释义

例句

1.When metal cools, it undergoes thermal contraction, which can lead to tighter fits in machinery.

当金属冷却时，它会经历热收缩，这可能导致机械部件之间的配合更紧密。

2.Engineers must account for thermal contraction in the design of bridges to prevent structural failure.

工程师在设计桥梁时必须考虑热收缩，以防止结构失效。

3.During winter, the thermal contraction of materials can cause cracks in roads.

在冬季，材料的热收缩可能导致道路出现裂缝。

4.Glass can break due to thermal contraction if it is cooled too quickly.

如果玻璃冷却得太快，可能会因热收缩而破裂。

5.The thermal contraction of the metal parts was significant when they were exposed to low temperatures.

当金属部件暴露在低温下时，热收缩非常显著。

作文

Thermal contraction is a fundamental concept in physics that describes how materials change in size when subjected to temperature variations. When most materials are heated, they expand; conversely, when they are cooled, they undergo a process known as thermal contraction (热收缩). This phenomenon is not only essential in understanding the behavior of different materials but also plays a critical role in various applications across engineering and technology.To illustrate, consider the example of a metal bridge. During hot summer days, the metal expands due to increased temperatures, which can lead to structural stress if the expansion is not accommodated properly. Engineers must design bridges with expansion joints that allow for this movement, preventing potential damage. On the other hand, during cold winter months, the metal contracts as it cools down, undergoing thermal contraction (热收缩). If the bridge were rigidly fixed without any allowances for this contraction, it could lead to cracking or other structural failures.Another common example of thermal contraction (热收缩) can be observed with water. Water behaves unusually when it freezes; it actually expands instead of contracting, which is why ice floats on water. However, when water is heated, it will expand, and upon cooling, it will contract. This characteristic is important for understanding natural processes, such as the freezing of lakes in winter, where the ice forms on the surface while the water below remains liquid, providing a habitat for aquatic life.In everyday life, we encounter thermal contraction (热收缩) in many ways. For instance, when you take a hot glass out of the oven and place it in cold water, the sudden drop in temperature causes the glass to contract rapidly, which may lead to shattering. This highlights the importance of understanding the limits of materials and their responses to thermal changes.The implications of thermal contraction (热收缩) extend beyond physical structures and everyday objects. In the field of electronics, components such as semiconductors can experience changes in their electrical properties due to temperature fluctuations. As these components heat up during operation, they expand, and when they cool down, they contract. This constant cycle can lead to fatigue and eventual failure if not properly managed.Moreover, thermal contraction (热收缩) is a crucial consideration in manufacturing processes. For example, when creating parts through injection molding, manufacturers must account for the contraction of materials as they cool. If they do not, the final product may not fit together correctly or meet specifications, leading to costly errors.In conclusion, understanding thermal contraction (热收缩) is vital across various fields, from civil engineering to electronics and manufacturing. By recognizing how materials respond to temperature changes, we can better design structures, create effective products, and ensure safety in our environments. As we continue to innovate and develop new technologies, the principles of thermal contraction (热收缩) will remain a key factor in our success.

热收缩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。当大多数材料被加热时，它们会膨胀；相反，当它们被冷却时，会经历一个称为热收缩的过程。这种现象不仅对理解不同材料的行为至关重要，而且在工程和技术的各种应用中也起着关键作用。例如，考虑一个金属桥梁。在炎热的夏季，金属因温度升高而膨胀，如果不适当地容纳这种膨胀，可能会导致结构应力。工程师必须设计带有膨胀缝的桥梁，以允许这种运动，从而防止潜在损坏。另一方面，在寒冷的冬季，金属在冷却时收缩，经历热收缩。如果桥梁没有任何容许这种收缩的固定设计，它可能会导致开裂或其他结构故障。另一个常见的热收缩可以通过水的例子来观察。水在结冰时表现得异常；它实际上膨胀而不是收缩，这就是冰为什么会漂浮在水面上的原因。然而，当水被加热时，它会膨胀，而在冷却时则会收缩。这一特性对于理解自然过程非常重要，例如冬天湖泊的结冰过程，冰在表面形成，而下面的水仍然保持液态，为水生生物提供栖息地。在日常生活中，我们以多种方式遇到热收缩。例如，当你从烤箱中取出一个热玻璃杯并放入冷水中时，温度的突然下降会导致玻璃迅速收缩，这可能导致破裂。这突显了理解材料极限及其对热变化反应的重要性。热收缩的影响超出了物理结构和日常物品。在电子领域，半导体等组件可能会因温度波动而经历电气性能的变化。当这些组件在运行时加热时，它们会膨胀，而当它们冷却时则会收缩。这一周期性的循环如果没有得到妥善管理，可能会导致疲劳和最终失效。此外，热收缩在制造过程中也是一个关键考虑因素。例如，在进行注塑成型时，制造商必须考虑材料在冷却时的收缩。如果不这样做，最终产品可能无法正确装配或满足规格，从而导致昂贵的错误。总之，理解热收缩在各个领域都至关重要，从土木工程到电子学和制造。通过认识材料如何响应温度变化，我们可以更好地设计结构、创造有效的产品，并确保我们环境的安全。随着我们继续创新和开发新技术，热收缩的原理将始终是我们成功的关键因素。