coefficient of expansion

简明释义

膨胀系数

英英释义

例句

1.The coefficient of expansion 膨胀系数 of concrete can affect the durability of structures over time.

混凝土的膨胀系数会影响结构的耐久性。

2.When designing bridges, engineers must consider the coefficient of expansion 膨胀系数 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。

3.The coefficient of expansion 膨胀系数 for metals is generally higher than that for ceramics.

金属的膨胀系数通常高于陶瓷。

4.Different materials have different coefficients of expansion 膨胀系数, which can lead to structural issues if not accounted for.

不同材料具有不同的膨胀系数，如果不加以考虑，可能会导致结构问题。

5.Glass has a low coefficient of expansion 膨胀系数, making it suitable for high-temperature applications.

玻璃的膨胀系数较低，使其适用于高温应用。

作文

The concept of coefficient of expansion is crucial in various fields of science and engineering, particularly in materials science and thermodynamics. The coefficient of expansion refers to the degree to which a material expands when it is heated. This property is essential for understanding how different materials behave under temperature changes, which can significantly impact their performance in practical applications.For instance, consider the construction of bridges and buildings. Engineers must account for the coefficient of expansion of the materials they use, such as steel and concrete. When temperatures rise, these materials expand; conversely, they contract when temperatures drop. If engineers fail to consider the coefficient of expansion, the structural integrity of a building could be compromised, leading to cracks or even catastrophic failures.Similarly, in the manufacturing industry, the coefficient of expansion plays a vital role in the production of components that must fit together precisely. For example, in the automotive industry, engine parts are subjected to extreme temperatures. Understanding the coefficient of expansion of metals used in engines helps manufacturers ensure that parts will not warp or become misaligned during operation, which could lead to engine failure.Moreover, the coefficient of expansion is not only relevant to solids but also to liquids and gases. For example, water has a unique coefficient of expansion that causes it to expand when it freezes, making ice less dense than liquid water. This phenomenon is crucial for aquatic life, as it allows ice to float on the surface of lakes and rivers, providing insulation for the water below during cold weather.In everyday life, we encounter the implications of the coefficient of expansion regularly. For instance, when you heat a glass of water, you may notice that the water level rises slightly. This is due to the coefficient of expansion of water, which dictates that it occupies more volume at higher temperatures. Similarly, metal lids can become difficult to remove from glass jars after being heated because the lid expands more than the jar itself, creating a tight seal.Understanding the coefficient of expansion is also important in the field of electronics. As electronic devices generate heat during operation, the materials within them expand. If the coefficient of expansion of different materials is not compatible, this can lead to stress and potential failure of components. Therefore, engineers must carefully select materials with appropriate thermal expansion properties to ensure the longevity and reliability of electronic devices.In conclusion, the coefficient of expansion is a fundamental property that affects a wide range of materials and applications. From construction and manufacturing to everyday occurrences and advanced electronics, understanding this concept is essential for ensuring safety, reliability, and functionality. As technology continues to advance, the importance of accurately measuring and applying the coefficient of expansion will only grow, highlighting its relevance in both current and future innovations.

“膨胀系数”的概念在科学和工程的各个领域中都至关重要，特别是在材料科学和热力学中。“膨胀系数”是指材料在加热时膨胀的程度。这一特性对于理解不同材料在温度变化下的行为至关重要，这可能会显著影响它们在实际应用中的表现。例如，考虑桥梁和建筑物的建设。工程师必须考虑他们所使用材料的“膨胀系数”，如钢和混凝土。当温度升高时，这些材料会膨胀；相反，当温度下降时，它们会收缩。如果工程师未能考虑“膨胀系数”，建筑物的结构完整性可能会受到损害，导致开裂甚至灾难性的失败。同样，在制造行业中，“膨胀系数”在生产必须精确配合的组件中也起着至关重要的作用。例如，在汽车工业中，发动机部件会经历极端温度。了解用于发动机的金属的“膨胀系数”有助于制造商确保部件在运行过程中不会变形或错位，这可能导致发动机故障。此外，“膨胀系数”不仅与固体相关，也与液体和气体相关。例如，水具有独特的“膨胀系数”，使其在冻结时膨胀，从而使冰的密度低于液态水。这一现象对水生生物至关重要，因为它使冰能够漂浮在湖泊和河流的表面，为寒冷天气下的水提供绝缘。在日常生活中，我们经常遇到“膨胀系数”的影响。例如，当你加热一杯水时，你可能会注意到水位略微上升。这是由于水的“膨胀系数”，它决定了在较高温度下占据更多的体积。同样，金属盖在加热后可能会变得难以从玻璃罐中取出，因为盖子膨胀得比罐子本身更大，从而形成紧密的密封。理解“膨胀系数”在电子领域也很重要。由于电子设备在运行过程中产生热量，内部材料会膨胀。如果不同材料的“膨胀系数”不兼容，这可能会导致应力和潜在的组件故障。因此，工程师必须仔细选择具有适当热膨胀特性的材料，以确保电子设备的耐用性和可靠性。总之，“膨胀系数”是影响广泛材料和应用的基本属性。从建筑和制造到日常现象和先进电子产品，理解这一概念对于确保安全、可靠和功能性至关重要。随着技术的不断进步，准确测量和应用“膨胀系数”的重要性只会增加，突显其在当前和未来创新中的相关性。