specific resistance

简明释义

比电阻

英英释义

例句

1.The material's specific resistance is crucial for determining its suitability in electrical applications.

该材料的特定电阻对于确定其在电气应用中的适用性至关重要。

2.The specific resistance of the semiconductor can change with temperature, affecting its performance.

半导体的特定电阻可以随温度变化而变化，从而影响其性能。

3.In this experiment, we measured the specific resistance of various metals to compare their conductivity.

在这个实验中，我们测量了各种金属的特定电阻以比较它们的导电性。

4.A low specific resistance indicates that a material is a good conductor of electricity.

低特定电阻表明该材料是良好的电导体。

5.Engineers often refer to the specific resistance when designing circuits.

工程师在设计电路时经常参考特定电阻。

作文

In the field of physics and electrical engineering, the concept of specific resistance plays a crucial role in understanding how materials conduct electricity. Specific resistance (also known as resistivity) is defined as the inherent property of a material that quantifies how strongly it resists the flow of electric current. This property is essential for engineers and scientists when designing electrical components and systems. To elaborate, specific resistance is typically measured in ohm-meters (Ω·m) and varies significantly among different materials. For instance, metals like copper and aluminum have low specific resistance, making them excellent conductors of electricity. On the other hand, materials such as rubber and glass exhibit high specific resistance, categorizing them as insulators. The significance of specific resistance can be observed in various practical applications. For example, when engineers select materials for wiring in electronic devices, they must consider the specific resistance to ensure minimal energy loss due to heat generated by resistance. In high-performance applications, such as power transmission lines, using materials with low specific resistance is vital to maintain efficiency and reduce operational costs.Moreover, specific resistance is not a fixed value; it can change with temperature. Most conductive materials exhibit an increase in specific resistance as temperature rises, while some semiconductors may experience a decrease. This temperature dependency is crucial for applications where temperature fluctuations are expected, such as in automotive or aerospace industries. Engineers must account for these changes to ensure reliable performance across varying conditions.The relationship between specific resistance and conductivity also merits discussion. Conductivity is the inverse of specific resistance; thus, a material with high conductivity has low specific resistance. Understanding this relationship allows engineers to choose the right materials for specific applications based on their conductive properties. In summary, specific resistance is a fundamental property that influences the design and functionality of electrical systems. By comprehensively understanding specific resistance, engineers can optimize the performance of electrical components and systems, ensuring safety, efficiency, and reliability. As technology continues to advance, the importance of selecting materials with appropriate specific resistance will only grow, highlighting the need for ongoing research and innovation in this area.

在物理和电气工程领域，特定电阻的概念在理解材料如何导电方面起着至关重要的作用。特定电阻（也称为电阻率）被定义为材料的固有属性，它量化了材料对电流流动的抵抗程度。这一属性对于工程师和科学家在设计电气组件和系统时至关重要。进一步阐述，特定电阻通常以欧姆米（Ω·m）为单位测量，并且在不同材料之间差异显著。例如，铜和铝等金属具有较低的特定电阻，使它们成为优秀的电导体。另一方面，橡胶和玻璃等材料则表现出较高的特定电阻，将其归类为绝缘体。特定电阻的重要性可以在各种实际应用中观察到。例如，当工程师选择电子设备中的布线材料时，他们必须考虑特定电阻以确保由于电阻引起的能量损失最小。在高性能应用中，如电力传输线路，使用具有低特定电阻的材料对保持效率和降低运营成本至关重要。此外，特定电阻并不是一个固定值；它可能会随着温度的变化而改变。大多数导电材料在温度升高时会表现出特定电阻的增加，而一些半导体材料可能会经历特定电阻的降低。这种温度依赖性对于汽车或航空航天等预期温度波动的应用至关重要。工程师必须考虑这些变化，以确保在不同条件下的可靠性能。特定电阻与电导率之间的关系也值得讨论。电导率是特定电阻的倒数；因此，具有高电导率的材料具有低特定电阻。理解这种关系使工程师能够根据材料的导电特性为特定应用选择合适的材料。总之，特定电阻是影响电气系统设计和功能的基本属性。通过全面理解特定电阻，工程师可以优化电气组件和系统的性能，确保安全、高效和可靠。随着技术的不断进步，选择具有适当特定电阻的材料的重要性只会增加，这突显了在这一领域持续研究和创新的必要性。