dielectric characteristic

简明释义

电介质特性

英英释义

例句

1.The engineer tested the cable to determine its dielectric characteristic 介电特性 under various temperatures.

工程师测试了电缆以确定其在不同温度下的介电特性。

2.In RF applications, knowing the dielectric characteristic 介电特性 is essential for signal integrity.

在射频应用中，了解介电特性对于信号完整性至关重要。

3.The dielectric characteristic 介电特性 of a substrate can influence the overall efficiency of a circuit.

基材的介电特性可以影响电路的整体效率。

4.The dielectric characteristic 介电特性 of the insulating material affects the performance of electrical devices.

绝缘材料的介电特性影响电气设备的性能。

5.Understanding the dielectric characteristic 介电特性 of materials is crucial for designing capacitors.

理解材料的介电特性对于设计电容器至关重要。

作文

The study of materials and their properties is essential in various fields, especially in electrical engineering and physics. One crucial aspect of these materials is their dielectric characteristic, which refers to the ability of a material to store and dissipate electrical energy when subjected to an electric field. Understanding this property is fundamental for designing capacitors, insulators, and other electronic components. Dielectric materials are classified based on their dielectric characteristic. These characteristics include the dielectric constant, loss tangent, and breakdown voltage. The dielectric constant, also known as relative permittivity, indicates how much electric field energy a material can store compared to a vacuum. A higher dielectric constant means that the material can store more energy, making it suitable for applications where capacitance is critical. For instance, in capacitors, materials with high dielectric constants are preferred to enhance their performance. Another important aspect of the dielectric characteristic is the loss tangent, which measures the energy lost as heat when the material is subjected to an alternating electric field. This parameter is particularly significant in high-frequency applications where energy efficiency is crucial. Materials with low loss tangents are ideal for RF (radio frequency) applications, as they minimize energy loss and improve overall system efficiency. Breakdown voltage is another critical dielectric characteristic that determines the maximum electric field a material can withstand before it becomes conductive. This property is vital for insulator materials used in power transmission lines and electronic devices. If the breakdown voltage is exceeded, the material can fail, leading to short circuits and potential equipment damage. Therefore, understanding the breakdown voltage helps engineers select appropriate materials for specific applications to ensure reliability and safety. In practical applications, the dielectric characteristic of materials can vary significantly based on temperature, frequency, and environmental conditions. Engineers must consider these factors when designing systems that rely on dielectric materials. For example, a capacitor may perform well at room temperature but could exhibit different behavior at elevated temperatures or varying frequencies. Therefore, thorough testing and characterization of the dielectric characteristic under different conditions are essential for ensuring optimal performance. Furthermore, advancements in material science have led to the development of new dielectric materials with enhanced dielectric characteristic. Researchers are constantly exploring polymers, ceramics, and composite materials to find alternatives that offer better performance and lower costs. These innovations play a crucial role in the advancement of technology, enabling smaller, lighter, and more efficient electronic devices. In conclusion, the dielectric characteristic of materials is a fundamental property that influences the performance of various electronic components. By understanding and optimizing these characteristics, engineers can design more efficient and reliable systems. As technology continues to evolve, the importance of studying and improving the dielectric characteristic will only grow, paving the way for innovations in electronics and beyond.

材料及其性质的研究在各个领域中都至关重要，尤其是在电气工程和物理学中。这些材料的一个关键方面是它们的介电特性，指的是材料在施加电场时储存和耗散电能的能力。理解这一属性对于设计电容器、绝缘体和其他电子元件至关重要。介电材料根据其介电特性进行分类。这些特性包括介电常数、损耗正切和击穿电压。介电常数，也称为相对介电率，表示材料储存电场能量的能力与真空相比的程度。较高的介电常数意味着材料可以储存更多的能量，使其适用于电容至关重要的应用。例如，在电容器中，具有高介电常数的材料被优先选择，以增强其性能。介电特性的另一个重要方面是损耗正切，它测量材料在交变电场作用下作为热量损失的能量。这一参数在高频应用中尤为重要，因为能效至关重要。低损耗正切的材料非常适合射频（RF）应用，因为它们最小化能量损失，提高整体系统效率。击穿电压是另一个关键的介电特性，它决定了材料在变为导电之前能够承受的最大电场。这一特性对用于电力传输线和电子设备的绝缘材料至关重要。如果超过击穿电压，材料可能会失效，导致短路和潜在的设备损坏。因此，理解击穿电压有助于工程师选择适合特定应用的材料，以确保可靠性和安全性。在实际应用中，材料的介电特性可能会因温度、频率和环境条件而显著变化。工程师在设计依赖于介电材料的系统时必须考虑这些因素。例如，一个电容器在室温下表现良好，但在高温或不同频率下可能表现不同。因此，在不同条件下对介电特性进行彻底测试和表征对于确保最佳性能至关重要。此外，材料科学的进步导致新型介电材料的开发，这些材料具有增强的介电特性。研究人员不断探索聚合物、陶瓷和复合材料，以寻找提供更好性能和更低成本的替代品。这些创新在技术进步中起着至关重要的作用，使得电子设备更小、更轻、更高效。总之，材料的介电特性是影响各种电子元件性能的基本属性。通过理解和优化这些特性，工程师可以设计出更高效、更可靠的系统。随着技术的不断发展，研究和改进介电特性的重要性只会增加，为电子学及其他领域的创新铺平道路。