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
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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impedance
n : a material's opposition to the flow of electric current;
measured in ohms [syn: electric resistance, electrical
resistance, resistance, resistivity, ohmic
resistance]