electric impedance

简明释义

电阻抗

英英释义

例句

1.In bioelectrical impedance analysis, the electric impedance 电阻抗 of body tissues is measured to assess health.

在生物电阻抗分析中，测量身体组织的电阻抗 electric impedance以评估健康状况。

2.Engineers often use electric impedance 电阻抗 measurements to troubleshoot electrical systems.

工程师们经常使用电阻抗 electric impedance测量来排除电气系统故障。

3.The electric impedance 电阻抗 of a capacitor changes with frequency, affecting circuit performance.

电容器的电阻抗 electric impedance随频率变化，这会影响电路性能。

4.The technician measured the electric impedance 电阻抗 of the circuit to ensure it was functioning properly.

技术人员测量了电路的电阻抗 electric impedance以确保其正常运行。

5.Understanding electric impedance 电阻抗 is crucial for designing efficient electrical circuits.

理解电阻抗 electric impedance对于设计高效的电路至关重要。

作文

Electric impedance is a fundamental concept in electrical engineering and physics, representing the total opposition that a circuit offers to the flow of alternating current (AC). It is a complex quantity that combines resistance and reactance, allowing engineers to analyze how circuits respond to different frequencies of AC signals. Understanding electric impedance (电阻抗) is crucial for designing efficient electrical systems, as it affects everything from power distribution to signal processing. To grasp the significance of electric impedance (电阻抗), we must first differentiate between resistance and reactance. Resistance is the opposition to current flow in a conductor, measured in ohms, and it remains constant regardless of the frequency of the applied voltage. In contrast, reactance varies with frequency and arises from inductors and capacitors in a circuit. Inductive reactance increases with frequency, while capacitive reactance decreases. The combination of these two components results in the overall electric impedance (电阻抗) of the circuit.The mathematical representation of electric impedance (电阻抗) is given by the formula Z = R + jX, where Z is the impedance, R is the resistance, j is the imaginary unit, and X is the reactance. This equation highlights the complex nature of electric impedance (电阻抗), where the real part (R) represents resistance, and the imaginary part (X) represents reactance. By using this formula, engineers can calculate how much current will flow through a circuit when a specific voltage is applied, taking into account both resistance and reactance.One practical application of electric impedance (电阻抗) is in audio electronics. Speakers, for example, have a certain impedance rating that determines how much power they can handle and how efficiently they convert electrical energy into sound. If an amplifier is connected to a speaker with a mismatched impedance, it can lead to poor performance or even damage to the equipment. Therefore, understanding electric impedance (电阻抗) is essential for achieving optimal audio quality.In addition to audio systems, electric impedance (电阻抗) plays a critical role in medical applications, particularly in bioelectrical impedance analysis (BIA). This technique measures the impedance of body tissues to assess body composition, hydration levels, and overall health. By sending a small electrical current through the body and measuring the resulting electric impedance (电阻抗), healthcare professionals can gain valuable insights into a patient's physical condition without invasive procedures.Furthermore, the study of electric impedance (电阻抗) has led to advancements in technologies such as wireless charging and smart grids. These innovations rely on precise control and understanding of impedance to optimize energy transfer and improve efficiency. As technology continues to evolve, the importance of electric impedance (电阻抗) will only grow, making it a vital area of study for future engineers and scientists.In conclusion, electric impedance (电阻抗) is a key concept that bridges the gap between theoretical physics and practical engineering applications. Its role in various fields, from audio electronics to medical diagnostics, underscores its significance in our daily lives. By understanding the principles of electric impedance (电阻抗), we can design more efficient systems and enhance our technological capabilities, paving the way for future innovations.