linear expansion coeffcient

简明释义

线膨胀系数

英英释义

例句

1.Understanding the linear expansion coefficient 线性膨胀系数 is crucial for designing bridges that can withstand temperature changes.

理解线性膨胀系数 线性膨胀系数对于设计能够承受温度变化的桥梁至关重要。

2.The linear expansion coefficient 线性膨胀系数 of glass is different from that of metals, which affects how they are used in construction.

玻璃的线性膨胀系数 线性膨胀系数与金属不同，这影响了它们在建筑中的使用。

3.The linear expansion coefficient 线性膨胀系数 of rubber is relatively high, making it suitable for applications where flexibility is needed.

橡胶的线性膨胀系数 线性膨胀系数相对较高，使其适合需要灵活性的应用。

4.When choosing materials for a thermal system, the linear expansion coefficient 线性膨胀系数 must be considered to prevent failure.

在选择热系统材料时，必须考虑线性膨胀系数 线性膨胀系数以防止故障。

5.The engineer calculated the linear expansion coefficient 线性膨胀系数 of the metal to ensure it would fit properly in the structure.

工程师计算了金属的线性膨胀系数 线性膨胀系数，以确保它能在结构中正确安装。

作文

The concept of thermal expansion is fundamental in physics and engineering, particularly when dealing with materials that experience temperature changes. One important aspect of this phenomenon is the linear expansion coefficient, which quantifies how much a material expands per unit length for each degree of temperature increase. Understanding this coefficient is crucial for various applications, including construction, manufacturing, and even everyday objects like bridges and railways.When materials are heated, their atoms vibrate more vigorously, leading to an increase in distance between them. This results in the material expanding. The linear expansion coefficient is defined mathematically as the change in length per unit length per degree change in temperature. For example, if a metal rod has a linear expansion coefficient of 12 x 10^-6 /°C, it means that for every degree Celsius increase in temperature, the rod will expand 12 millionths of its original length.In practical terms, engineers must consider the linear expansion coefficient when designing structures that will be subjected to temperature variations. For instance, if a bridge is built using steel, which has a relatively high linear expansion coefficient, the design must accommodate the expansion and contraction that occurs with seasonal temperature changes. Failure to account for this can lead to structural damage or even catastrophic failure.Moreover, different materials have different linear expansion coefficients. Metals generally have higher coefficients compared to materials like glass or concrete. This difference is significant when combining materials in a single structure. For example, if a steel beam is anchored to a concrete pillar, the differing expansion rates could create stress at the junction, potentially leading to cracks or other forms of damage over time. Therefore, understanding the linear expansion coefficient of each material involved is essential for ensuring durability and safety.In addition to construction, the linear expansion coefficient plays a vital role in manufacturing processes. For instance, when creating machinery or electronic devices, components made from different materials must fit together precisely. If the linear expansion coefficient of one component is significantly different from another, the device may malfunction as it heats up during operation.The importance of the linear expansion coefficient extends beyond industrial applications; it also affects everyday life. Take, for example, the expansion of metal lids on glass jars. When heated, the lid expands more than the glass jar due to its higher linear expansion coefficient, making it easier to open. This simple observation illustrates how the principles of thermal expansion are at play in our daily activities.In conclusion, the linear expansion coefficient is a critical parameter in the study of thermal expansion. Its implications are vast, affecting everything from large-scale engineering projects to everyday household tasks. By understanding and applying the knowledge of the linear expansion coefficient, we can ensure the reliability and functionality of materials in various contexts, ultimately improving both safety and efficiency in numerous fields.

热膨胀的概念在物理和工程中是基础，特别是在处理经历温度变化的材料时。这个现象的一个重要方面是线性膨胀系数，它量化了材料在每升高一度温度时单位长度的膨胀量。理解这个系数对于各种应用至关重要，包括建筑、制造，甚至日常物品如桥梁和铁路。当材料被加热时，其原子的振动会更加剧烈，导致它们之间的距离增加。这导致材料膨胀。线性膨胀系数在数学上被定义为单位长度的变化与温度变化的比例。例如，如果一个金属杆的线性膨胀系数为12 x 10^-6 /°C，这意味着每升高一度摄氏温度，杆将扩展其原始长度的1200万分之一。在实际应用中，工程师在设计会受到温度变化影响的结构时，必须考虑线性膨胀系数。例如，如果用钢材建造一座桥梁，而钢材的线性膨胀系数相对较高，那么设计必须考虑到随着季节温度变化而发生的膨胀和收缩。如果不考虑这一点，可能会导致结构损坏甚至灾难性失败。此外，不同材料具有不同的线性膨胀系数。金属的系数通常比玻璃或混凝土等材料高。这种差异在将多种材料结合在一个结构中时尤为重要。例如，如果一个钢梁锚固在混凝土柱上，由于膨胀速率的不同，可能会在连接处产生应力，随着时间的推移导致裂缝或其他形式的损坏。因此，了解每种材料的线性膨胀系数对于确保耐久性和安全性至关重要。除了建筑，线性膨胀系数在制造过程中也扮演着重要角色。例如，在创建机械或电子设备时，由不同材料制成的组件必须精确配合。如果一个组件的线性膨胀系数与另一个组件显著不同，那么该设备在运行过程中可能会发生故障。线性膨胀系数的重要性超越了工业应用，它也影响着日常生活。以金属盖子在玻璃罐上的膨胀为例。当加热时，由于其更高的线性膨胀系数，盖子比玻璃罐膨胀得更多，从而使打开变得更容易。这一简单的观察说明了热膨胀原理在我们日常活动中的作用。总之，线性膨胀系数是研究热膨胀的关键参数。它的影响广泛，涉及从大型工程项目到日常家务的方方面面。通过理解和应用线性膨胀系数的知识，我们可以确保各种环境中材料的可靠性和功能性，最终提高多个领域的安全性和效率。