| 单词 | impedance |
| 释义 | impedance /im peed"ns/, n. 1. Elect. the total opposition to alternating current by an electric circuit, equal to the square root of the sum of the squares of the resistance and reactance of the circuit and usually expressed in ohms. Symbol: Z 2. Also called mechanical impedance. Physics. the ratio of the force on a system undergoing simple harmonic motion to the velocity of the particles in the system. 3. something that impedes; an obstacle or hindrance. [1886; IMPEDE + -ANCE; term introduced by O. Heaviside] |
| 随便看 |
英语词典包含168451条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。