conduction

简明释义

英[kənˈdʌkʃn]美[kənˈdʌkʃn]

n. [生理] 传导

英英释义

单词用法

同义词

反义词

例句

1.We offer special electric conduction paste and special conductive resin.

我们提供特殊的导电粘贴和特殊导电性树脂。

2.When an electron leaps into the conduction band, it leaves behind a hole in the valence band.

当一个电子跃迁到传导带，它会在价带留下一个“凹陷”。

3.At much lower pressures, mechanical deformation may indirectly affect nerve conduction by impairing vascular supply.

在较低的压力下，机械性牵张，可能通过损害血管供给间接影响到神经传导。

4.Its interference way covers mainly electric magnetic radiation, conduction and induction coupling.

变频器的干扰途径主要有电磁辐射、导、应耦合。

5.Copper's excellent conduction of electricity and heat means that it is used not only to cable and pipe the globe.

铜卓越的导电能力和导热能力意味着它不仅用于制造全球的电缆和管道。

6.The thermal conduction of a composite medium with variable thermal conductivities is discussed.

讨论了可变导热系数的复合介质的导热性。

7.However, unlike the semiconductor silicon, graphene has no gap between its valence and conduction bands.

然而，与半导体硅不同，石墨烯的价带和导带之间没有带隙。

8.The massive metal constructions served as a base for trial conduction.

这巨大的金属结构构件作为传力机构的基座。

9.The process of heat transfer through materials is known as conduction.

通过材料的热量传递过程称为导热。

10.In metals, conduction is very efficient due to the presence of free electrons.

在金属中，由于存在自由电子，导热非常高效。

11.When you touch a hot stove, you experience conduction of heat to your skin.

当你触摸热炉时，你体验到热量通过导热传递到你的皮肤。

12.Insulating materials are used to reduce conduction in buildings.

绝缘材料用于减少建筑物中的导热。

13.The conduction of electricity in wires is crucial for powering devices.

电线中的导电对于为设备供电至关重要。

作文

In the realm of physics, the term conduction refers to the process by which heat or electricity is directly transmitted through a substance when there is a difference in temperature or electric potential between adjoining regions. This phenomenon plays a crucial role in various scientific and engineering applications, making it essential for us to understand its mechanisms and implications. Conduction can be observed in everyday life, from cooking food to heating our homes. For instance, when you place a metal spoon in a hot pot of soup, the heat from the soup transfers to the spoon through conduction. The metal atoms in the spoon vibrate more quickly as they absorb heat, transferring that energy along the length of the spoon to the cooler end. This simple example illustrates how conduction operates at the molecular level. Understanding conduction is vital not only in physics but also in other fields such as biology and materials science. In biology, the concept of conduction is related to how nerves transmit signals within the body. Nerve cells, or neurons, utilize conduction to propagate electrical impulses, allowing for communication between different parts of the body. This type of conduction is crucial for reflex actions and sensory perceptions, showcasing the interconnectedness of physical principles and biological functions. In materials science, the study of conduction helps engineers design better materials for specific applications. For example, thermal conductors like copper and aluminum are used in cookware because they efficiently transfer heat, while insulators such as rubber and glass are used to prevent heat loss in buildings. Understanding the properties that affect conduction, such as temperature, material composition, and surface area, enables scientists and engineers to innovate and improve technologies. Moreover, the efficiency of conduction can be influenced by several factors. The type of material is one of the most significant determinants; metals generally have high thermal conductivity, meaning they transfer heat quickly, whereas non-metals tend to have lower conductivity. Additionally, the thickness of the material and the temperature gradient across it can affect the rate of conduction. A steeper temperature gradient typically results in a faster rate of heat transfer. This principle is particularly important in designing thermal insulation materials, where minimizing conduction is key to energy efficiency. In conclusion, conduction is a fundamental concept that permeates various aspects of our lives and the natural world. From the way we cook our meals to the functioning of our nervous system, the principles of conduction are at play, influencing outcomes and efficiencies in countless scenarios. As we continue to explore and understand the intricacies of conduction, we unlock new possibilities for innovation and improvement in technology, health, and environmental sustainability. Thus, grasping the concept of conduction not only enriches our knowledge of physics but also empowers us to apply this understanding to real-world challenges and advancements.

在物理学领域，术语导热指的是当相邻区域之间存在温度或电势差时，通过物质直接传递热量或电流的过程。这种现象在各种科学和工程应用中发挥着至关重要的作用，因此理解其机制和影响是至关重要的。导热可以在日常生活中观察到，从烹饪食物到加热我们的家。例如，当你把金属勺子放在热汤中时，汤中的热量通过导热传递给勺子。勺子中的金属原子随着吸收热量而振动得更快，将能量沿着勺子的长度转移到较凉的一端。这个简单的例子说明了导热在分子层面上的运作。 理解导热不仅在物理学中至关重要，在生物学和材料科学等其他领域也是如此。在生物学中，导热的概念与神经如何在体内传递信号有关。神经细胞或神经元利用导热来传播电冲动，使身体不同部位之间能够进行沟通。这种类型的导热对反射动作和感觉感知至关重要，展示了物理原理和生物功能之间的相互联系。 在材料科学中，导热的研究帮助工程师为特定应用设计更好的材料。例如，铜和铝等热导体被用于炊具，因为它们有效地传递热量，而橡胶和玻璃等绝缘材料则用于防止建筑物的热量损失。理解影响导热的属性，如温度、材料成分和表面积，使科学家和工程师能够创新和改善技术。 此外，导热的效率可能受到多种因素的影响。材料的类型是最重要的决定因素之一；金属通常具有高热导率，意味着它们迅速传递热量，而非金属的导热性则较低。此外，材料的厚度和其间的温度梯度也会影响导热的速率。温度梯度越陡，热量转移的速度通常越快。这个原理在设计热绝缘材料时尤为重要，其中最小化导热是实现能源效率的关键。 总之，导热是一个基本概念，渗透到我们生活和自然界的各个方面。从我们烹饪食物的方式到神经系统的功能，导热的原理在无数场景中发挥着作用，影响着结果和效率。随着我们继续探索和理解导热的复杂性，我们为技术、健康和环境可持续性方面的创新和改进打开了新的可能性。因此，掌握导热的概念不仅丰富了我们对物理学的知识，也使我们能够将这种理解应用于现实世界的挑战和进步。