specific resistance

简明释义

电阻率

英英释义

例句

1.The engineer calculated the specific resistance 特定电阻 of the material to ensure it met the project requirements.

工程师计算了材料的specific resistance 特定电阻以确保其符合项目要求。

2.In electronics, the specific resistance 特定电阻 of a conductor influences its efficiency.

在电子学中，导体的specific resistance 特定电阻影响其效率。

3.The specific resistance 特定电阻 of insulators is typically very high, preventing current flow.

绝缘材料的specific resistance 特定电阻通常非常高，阻止电流流动。

4.The specific resistance 特定电阻 of copper is lower than that of aluminum, making it a better choice for wiring.

铜的specific resistance 特定电阻低于铝，因此它更适合用于布线。

5.To determine the specific resistance 特定电阻 of different materials, we conducted a series of tests.

为了确定不同材料的specific resistance 特定电阻，我们进行了系列测试。

作文

In the realm of physics and engineering, understanding the concept of specific resistance is crucial for various applications, particularly in the field of electrical engineering. Specific resistance refers to the inherent property of a material that quantifies its ability to resist the flow of electric current. This property, also known as resistivity, is a fundamental characteristic that influences how materials behave when subjected to electric fields.To elaborate further, specific resistance is defined as the resistance of a unit length of a material with a unit cross-sectional area. It is measured in ohm-meters (Ω·m) and is dependent on the material's composition and temperature. Different materials exhibit different levels of specific resistance. For instance, metals like copper and aluminum have low specific resistance, making them excellent conductors of electricity. In contrast, materials such as rubber and glass possess high specific resistance, categorizing them as insulators.The significance of specific resistance cannot be overstated in practical applications. In electrical circuits, engineers must choose materials with appropriate specific resistance to ensure efficient operation. For example, in designing wiring for buildings, using copper wires is preferable due to their low specific resistance, which allows for minimal energy loss as heat. On the other hand, insulators with high specific resistance are used to coat wires and prevent unwanted current leakage, ensuring safety and efficiency.Moreover, the specific resistance of a material can change with temperature. As temperature increases, the atomic structure of a material can become more agitated, leading to increased collisions between charge carriers (electrons) and the atoms of the material. This results in higher specific resistance. Understanding this relationship is vital for engineers who must account for temperature variations in their designs, especially in environments subject to extreme conditions.In addition to electrical applications, specific resistance plays a role in other fields such as materials science and geophysics. For instance, in materials science, researchers study specific resistance to develop new materials with tailored electrical properties for specific applications, such as semiconductors and superconductors. In geophysics, the specific resistance of soil and rock formations can provide valuable information about subsurface conditions, aiding in resource exploration and environmental assessments.In conclusion, the concept of specific resistance is a foundational aspect of understanding electrical properties in various materials. Its implications span across multiple disciplines, highlighting its importance not only in electrical engineering but also in materials science and geophysics. As technology advances, the continuous study and application of specific resistance will undoubtedly lead to innovations that enhance efficiency and functionality in countless devices and systems.

在物理和工程领域，理解“特定电阻”的概念对于各种应用至关重要，尤其是在电气工程领域。“特定电阻”指的是材料固有的属性，它量化了材料对电流流动的抵抗能力。这一属性，也称为电阻率，是影响材料在电场作用下行为的基本特征。进一步阐述，“特定电阻”被定义为单位长度的材料与单位横截面积的电阻。它的测量单位是欧姆米（Ω·m），并且依赖于材料的组成和温度。不同的材料表现出不同水平的“特定电阻”。例如，铜和铝等金属具有低“特定电阻”，使其成为优良的电导体。相反，橡胶和玻璃等材料则具有高“特定电阻”，将其归类为绝缘体。“特定电阻”的重要性在实际应用中不容小觑。在电路中，工程师必须选择适当“特定电阻”的材料以确保高效操作。例如，在建筑物的布线设计中，由于铜线的低“特定电阻”允许最小的能量损失为热量，因此更可取。另一方面，具有高“特定电阻”的绝缘体用于包覆电线，以防止不必要的电流泄漏，确保安全和效率。此外，材料的“特定电阻”可能会随温度变化而变化。随着温度升高，材料的原子结构可能变得更加激动，导致电荷载体（电子）与材料原子之间的碰撞增加。这导致“特定电阻”增高。理解这种关系对于工程师至关重要，他们必须在设计中考虑温度变化，特别是在极端条件下的环境中。除了电气应用，“特定电阻”在材料科学和地球物理学等其他领域也发挥着作用。例如，在材料科学中，研究人员研究“特定电阻”以开发具有特定应用电气特性的新的材料，如半导体和超导体。在地球物理学中，土壤和岩石层的“特定电阻”可以提供有关地下条件的宝贵信息，有助于资源勘探和环境评估。总之，“特定电阻”的概念是理解各种材料电气特性的基础方面。它的影响跨越多个学科，突显了其在电气工程、材料科学和地球物理学中的重要性。随着技术的进步，对“特定电阻”的持续研究和应用无疑将导致创新，从而提高无数设备和系统的效率和功能。