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im·ped·ance /ɪmˈpidṇ(t)s/

阻抗

im·ped·ance /ɪmˈpɪdṇ(t)s/ 名詞

阻抗,氣道阻力

impedance

阻抗

From: Network Terminology

impedance

阻抗

Im·ped·ance n. Elec. The apparent resistance in an electric circuit to the flow of an alternating current, analogous to the actual electrical resistance to a direct current, being the ratio of electromotive force to the current. It is equal to √(R² + X²), where *R* = ohmic resistance, *X* = reactance. For an inductive circuit, X = 2πfL, where *f* = frequency and *L* = self-inductance; for a circuit with capacity X = 1 ÷ 2πfC, where *C* = capacity.

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From: WordNet (r) 2.0

impedance

n : a material's opposition to the flow of electric current;

measured in ohms [syn: electric resistance, electrical

resistance, resistance, resistivity, ohmic

resistance]