dielectric loss

简明释义

介电损耗

英英释义

例句

1.Engineers must consider dielectric loss 介质损耗 when designing RF circuits.

工程师在设计射频电路时必须考虑介质损耗介质损耗。

2.High-frequency AC circuits can experience significant dielectric loss 介质损耗, which affects their efficiency.

高频交流电路可能会经历显著的介质损耗介质损耗，这会影响其效率。

3.Materials with low dielectric loss 介质损耗 are preferred for high-performance insulators.

对于高性能绝缘体，优选低介质损耗介质损耗的材料。

4.The dielectric loss 介质损耗 factor is crucial in determining the performance of a dielectric material.

在确定介电材料性能时，介质损耗介质损耗因子是至关重要的。

5.The dielectric loss 介质损耗 in capacitors can lead to overheating and failure over time.

电容器中的介质损耗介质损耗可能导致过热和随时间的失效。

作文

Understanding the concept of dielectric loss is crucial in the field of electrical engineering and materials science. Dielectric loss refers to the energy dissipation that occurs when an insulating material, or dielectric, is subjected to an alternating electric field. This phenomenon is particularly important in applications involving capacitors, insulators, and various electronic components. In simple terms, dielectric loss can be viewed as the inefficiency of a dielectric material to store electrical energy. When an electric field is applied to a dielectric, the molecules within the material become polarized and attempt to align themselves with the field. However, this alignment is not instantaneous, leading to a lag in polarization. As a result, some energy is lost in the form of heat due to the friction between the molecules, which is what we refer to as dielectric loss.The significance of dielectric loss cannot be overstated, especially in high-frequency applications such as radio frequency (RF) communication and microwave technology. In these scenarios, the efficiency of signal transmission is paramount. High dielectric loss in materials can lead to poor performance, resulting in signal degradation and increased energy consumption. Therefore, engineers must select materials with low dielectric loss for applications where minimizing energy loss is critical.Moreover, the dielectric loss tangent, often denoted as tan δ, is a dimensionless parameter that quantifies the amount of energy lost relative to the energy stored in the dielectric. A lower tan δ value indicates better performance of the dielectric material, making it suitable for high-frequency applications. For instance, materials like Teflon and certain ceramic compounds exhibit low dielectric loss, making them ideal for use in capacitors and RF components.In addition to its relevance in electronics, dielectric loss also plays a role in other fields such as biomedical engineering. In medical applications, such as tissue heating in diathermy, understanding the dielectric loss characteristics of biological tissues is essential for optimizing treatment effectiveness while minimizing damage to surrounding healthy tissues.To summarize, dielectric loss is a fundamental concept that affects the efficiency of electrical systems. Its implications are vast, influencing the design and selection of materials in various applications, from consumer electronics to advanced medical devices. As technology continues to evolve, the demand for materials with lower dielectric loss will only increase, driving research and innovation in the field of materials science. Engineers and scientists must continually explore new materials and methods to reduce dielectric loss, ensuring that our electrical systems operate at peak efficiency, thereby conserving energy and enhancing performance across a multitude of applications.

理解介质损耗的概念在电气工程和材料科学领域至关重要。介质损耗是指当绝缘材料或介质受到交变电场作用时发生的能量耗散现象。这个现象在涉及电容器、绝缘体和各种电子元件的应用中尤为重要。简单来说，介质损耗可以看作是介质材料储存电能的低效性。当电场施加于介质时，材料内部的分子会极化并试图与电场对齐。然而，这种对齐并不是瞬时的，导致极化存在滞后。因此，由于分子之间的摩擦，一些能量以热的形式损失，这就是我们所称的介质损耗。介质损耗的重要性不言而喻，特别是在高频应用中，如射频（RF）通信和微波技术。在这些情况下，信号传输的效率至关重要。材料中的高介质损耗可能导致性能不佳，导致信号衰减和能量消耗增加。因此，工程师必须选择低介质损耗的材料，用于需要最小化能量损失的应用。此外，介质损耗正切，通常表示为tan δ，是一个无量纲参数，量化了相对于介质中储存的能量而言损失的能量量。较低的tan δ值表明介质材料的性能更好，适合用于高频应用。例如，特氟龙和某些陶瓷化合物表现出低介质损耗，使它们成为电容器和RF组件的理想选择。除了在电子学中的相关性外，介质损耗还在生物医学工程等其他领域发挥作用。在医疗应用中，例如在透热疗法中，了解生物组织的介质损耗特性对优化治疗效果至关重要，同时最大限度地减少对周围健康组织的损害。总之，介质损耗是影响电气系统效率的基本概念。其影响范围广泛，影响着各类应用中材料的设计和选择，从消费电子到先进的医疗设备。随着技术的不断发展，对低介质损耗材料的需求只会增加，推动材料科学领域的研究和创新。工程师和科学家必须不断探索新材料和方法，以减少介质损耗，确保我们的电气系统以最佳效率运行，从而节约能源，提高各类应用的性能。