impedance

n. 阻抗 [计] 阻抗, 电抗

发音

UK /ɪmˈpiːdn̩s/
CA /ɪmˈpidn̩s/
US /ɪmˈpidn̩s/
AU /ɪmˈpiːdn̩s/

词形变化

impedances 复数 impedances

别名

impedence

释义与例句

n.
  1. 1.

    The act of impeding; that which impedes; a hindrance.

    可数 不可数
  2. 2.

    A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, and inductive and capacitive reactances; the ratio of voltage to current treated as complex quantities.

    阻抗

    可数 不可数 物理
  3. 3.

    A quantity analogous to electrical impedance in some other energy domain

    a measure of opposition to motion of something subjected to a force; the ratio of force to velocity treated as complex quantities.

    可数 不可数 物理
  4. 4.

    A quantity analogous to electrical impedance in some other energy domain

    the ratio of sound pressure to volume flow rate treated as complex quantities.

    可数 不可数 物理

词汇关系

名词

同义词 4

resistance electrical resistance ohmic resistance resistivity

下位词 1

ohmage

相关短语

impedance plethysmography impedance coil [电] 阻抗线圈 impedance coils impedance mismatch [计] 阻抗失配 impedance mismatches electrical impedance tomography radiation impedance [化] 辐射阻抗 acoustic impedance [化] 声阻抗

词源

From impede + -ance. In sense 2 and sense 3 it was coined by English mathematician and physicist Oliver Heaviside in 1886.

来源：wiktionary