measurement of resistance

简明释义

电阻测量

英英释义

例句

1.In physics class, we learned about the measurement of resistance in various materials.

在物理课上，我们学习了不同材料的电阻测量。

2.Accurate measurement of resistance is crucial for designing efficient electronic devices.

准确的电阻测量对于设计高效的电子设备至关重要。

3.The lab report included the measurement of resistance for each sample tested.

实验报告中包含了每个测试样本的电阻测量。

4.The technician used a multimeter for the measurement of resistance in the circuit.

技术员使用万用表进行电路中的电阻测量。

5.The engineer conducted a measurement of resistance to ensure the circuit was functioning properly.

工程师进行了电阻测量以确保电路正常工作。

作文

The concept of measurement of resistance plays a crucial role in various fields of science and engineering. Resistance, in electrical terms, refers to the opposition that a substance offers to the flow of electric current. It is measured in ohms (Ω) and is a fundamental property of materials that determines how much current will flow when a voltage is applied. Understanding the measurement of resistance is essential for designing circuits, troubleshooting electrical systems, and ensuring safety in electrical applications.To accurately measure resistance, several methods can be employed. The most common method involves the use of an ohmmeter, which is a device specifically designed to measure resistance. When using an ohmmeter, it is important to disconnect the component from any power source to avoid damaging the instrument and obtaining incorrect readings. The ohmmeter applies a small voltage across the resistor and measures the current flowing through it, allowing it to calculate the resistance based on Ohm's Law, which states that resistance equals voltage divided by current (R = V/I).Another method for the measurement of resistance is the four-wire measurement technique, often used in precision applications. This method involves using four separate leads: two for supplying current and two for measuring voltage. By eliminating the effect of lead resistance, this technique provides highly accurate results, making it ideal for low-resistance measurements in scientific research and industrial applications.In addition to electrical applications, the measurement of resistance also finds relevance in other fields such as materials science and biology. For instance, in materials science, resistance measurements can help determine the conductivity of materials, which is vital for developing new materials for electronics. In biological studies, resistance measurements are used to assess cell membrane integrity and the viability of cells under various conditions.Moreover, the measurement of resistance can be influenced by several factors, including temperature, humidity, and the physical state of the material. For example, as temperature increases, the resistance of most conductive materials also increases due to the increased movement of atoms, which hinders the flow of electrons. This relationship between temperature and resistance is critical in applications such as temperature sensors and thermistors, where precise measurements are necessary.In conclusion, the measurement of resistance is a fundamental concept that spans multiple disciplines, from electrical engineering to materials science. Its importance cannot be overstated, as it directly impacts the design and functionality of various technologies we rely on daily. By mastering the techniques and understanding the principles behind the measurement of resistance, professionals can enhance their work, leading to innovations and improvements in their respective fields. As technology continues to advance, the ability to accurately measure resistance will remain a vital skill for engineers, scientists, and technicians alike.

“电阻的测量”这一概念在科学和工程的多个领域中发挥着至关重要的作用。电阻在电气术语中是指一种物质对电流流动的阻碍。它以欧姆（Ω）为单位，是材料的一种基本属性，决定了施加电压时将会流过多少电流。理解“电阻的测量”对于设计电路、排除电气系统故障以及确保电气应用的安全性至关重要。为了准确测量电阻，可以采用几种方法。最常用的方法是使用欧姆计，这是一种专门用于测量电阻的设备。在使用欧姆计时，重要的是要将组件与任何电源断开，以避免损坏仪器和获取错误读数。欧姆计在电阻器上施加小电压并测量通过它的电流，从而根据欧姆定律计算电阻，欧姆定律的公式为电阻等于电压除以电流（R = V/I）。另一种“电阻的测量”方法是四线测量技术，通常用于精密应用。这种方法涉及使用四条独立的导线：两条用于提供电流，两条用于测量电压。通过消除导线电阻的影响，这种技术提供了高度准确的结果，使其成为科学研究和工业应用中低电阻测量的理想选择。除了电气应用外，“电阻的测量”在材料科学和生物学等其他领域也具有相关性。例如，在材料科学中，电阻测量可以帮助确定材料的导电性，这对于开发新型电子材料至关重要。在生物研究中，电阻测量用于评估细胞膜的完整性以及细胞在各种条件下的活力。此外，“电阻的测量”可能受到多种因素的影响，包括温度、湿度和材料的物理状态。例如，随着温度的升高，大多数导电材料的电阻也会增加，因为原子的运动增加，妨碍了电子的流动。这种温度与电阻之间的关系在温度传感器和热敏电阻等应用中至关重要，其中需要精确的测量。总之，“电阻的测量”是一个跨越多个学科的基本概念，从电气工程到材料科学。其重要性不容小觑，因为它直接影响着我们日常依赖的各种技术的设计和功能。通过掌握测量技术和理解“电阻的测量”背后的原理，专业人士可以提升他们的工作，推动各自领域的创新和进步。随着技术的不断进步，准确测量电阻的能力将始终是工程师、科学家和技术人员的重要技能。