resistivity

简明释义

英[ˌriːzɪˈstɪvəti]美[ˌriːzɪˈstɪvəti]

n. [电] 电阻率；抵抗力；电阻系数

英英释义

单词用法

同义词

反义词

例句

1.The microspheres have narrow distribution of diameter, excellent mechanical stability and acid-resistivity.

微球粒径分布窄，具有良好的机械稳定性和耐酸性。

2.The formation water salinity has a large effect on the absolute resistivity values.

地层水矿化度对岩石电阻率绝对值的影响很大。

3.It could be resistivity.

可以是电阻率。

4.Several factors can complicate measuring the resistivity of these materials, including problems in making good contact with the material.

有几种因素可能会使测量这些材料电阻率的工作复杂化，其中包括与材料实现良好接触的问题。

5.This is the theoretical expression for the resistivity, and it is in qualitative agreement with experiment.

这就是电阻率的理论表达式，它与实验定性地符合。

6.High impedance voltage switching may be necessary in applications such as monitoring electrochemical cells and measuring semiconductor resistivity.

在有些应用中，例如监测电化电池和测量半导体的电阻系数，则可能必须进行高阻抗电压切换。

7.Figure 4-46 shows a system for testing the resistivity of a bulk material such as a metal bar or rod.

图4 -46示出测试整块材料，如金属棒或金属条电阻率的系统。

8.The electrical conductivity of a material is inversely related to its resistivity 电阻率.

材料的电导率与其resistivity 电阻率成反比。

9.Copper has a low resistivity 电阻率, making it an excellent conductor of electricity.

铜的resistivity 电阻率很低，使其成为优良的电导体。

10.In the field of materials science, understanding resistivity 电阻率 is crucial for developing new conductive materials.

在材料科学领域，理解resistivity 电阻率对开发新型导电材料至关重要。

11.The resistivity 电阻率 of silicon increases with temperature, affecting its performance in electronic devices.

硅的resistivity 电阻率随温度升高而增加，影响其在电子设备中的性能。

12.To calculate the resistivity 电阻率 of a wire, you need to know its resistance and dimensions.

要计算一根电线的resistivity 电阻率，你需要知道它的电阻和尺寸。

作文

Resistivity is a fundamental property of materials that plays a crucial role in the field of electrical engineering and physics. It is defined as the measure of how strongly a material opposes the flow of electric current. The concept of resistivity, represented by the symbol ρ (rho), is essential to understanding how different materials conduct electricity. In this essay, we will explore the significance of resistivity (电阻率) and its applications in various domains. To begin with, the resistivity of a material is influenced by several factors, including temperature, material composition, and physical structure. For instance, metals like copper and aluminum have low resistivity (电阻率), making them excellent conductors of electricity. On the other hand, materials such as rubber and glass exhibit high resistivity (电阻率), which makes them effective insulators. This distinction is vital in designing electrical circuits and systems, as it determines the choice of materials used for wiring and insulation. One of the most important applications of resistivity (电阻率) is in the manufacturing of electronic components. Resistors, capacitors, and semiconductors are all designed based on the resistivity of the materials used. For example, in semiconductor devices, the resistivity can be manipulated through doping, which involves adding impurities to alter the electrical properties of the material. This process is crucial for creating components such as diodes and transistors, which are foundational to modern electronics. Moreover, the concept of resistivity (电阻率) extends beyond electronics into other fields such as geology and materials science. In geophysics, resistivity measurements are used to explore subsurface structures. By applying electrical currents to the ground and measuring the resulting voltage, scientists can infer the composition and characteristics of the earth's layers. This technique is invaluable in resource exploration, environmental studies, and even archaeological investigations. In addition to its scientific applications, understanding resistivity (电阻率) is also significant in everyday life. For instance, when selecting materials for home wiring, electricians consider the resistivity to ensure efficiency and safety. High resistivity (电阻率) materials may lead to energy loss in the form of heat, which can pose fire hazards. Therefore, knowledge of resistivity (电阻率) helps in making informed decisions that affect energy consumption and safety standards. Furthermore, the study of resistivity (电阻率) has led to innovations in technology. With the rise of renewable energy sources, understanding the resistivity of materials is crucial for developing efficient solar panels and batteries. Researchers are constantly looking for new materials with optimal resistivity (电阻率) to enhance the performance and longevity of energy storage solutions. In conclusion, resistivity (电阻率) is a key property that influences how materials behave in electrical applications. Its implications extend from the design of electronic devices to geological explorations and everyday electrical installations. As technology continues to advance, the importance of understanding resistivity (电阻率) will only grow, paving the way for innovations that enhance our lives and contribute to a sustainable future.