导纳(admittance)是电导和电纳的统称，在电力电子学中导纳定义为阻抗(impedance)的倒数，符号Y，单位是西门子，简称西(S)。和阻抗一样，导纳也是一个复数，由实数部分（电导G）和虚数部分（电纳B）组成：Y = G + jB.
n. admittance
... ESR) 当石英晶体串联振荡在fs时, C1及L1是相反相位而互相抵消, 整个共振子的动态支臂(motional arm) 的导纳(admittance)是接近最小阻抗值R1. 这时候整个石英晶体共振子的表现仅是一个电阻性的组件.
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Y|.Y|.Y|.Y| Y||Y|ZY||Y| Y|RY| Y|XY|（Y|阻Y|抗Y|）Y| Y||Y|Y||Y| Y|GY| Y|BY|（Y|Y|导Y|纳Y|Y|）Y| Y|CY|（Y|电Y|容Y|）Y| Y|.Y|.Y|.Y|
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导纳矩阵 Mobility Matrix ; matrix admittance
机械导纳 [力] mechanical admittance ; Mechanical Mobility
特性导纳 [电] characteristic admittance ; admittance characteristic
归一化导纳 [电子] normalized admittance ; reduced admittance
输入导纳 [电] input admittance ; Eingangsscheinleitwert
过渡导纳 [通信] indicial admittance ; indicator indicial admittance
导纳三角形 admittance triangle ; admit triangle
并联导纳 shunt admittance ; [电] parallel admittance
输出导纳 output admittance
喷管声导纳的数值计算结果与实验测得的结果非常吻合。
Numerial results of nozzle acoustic admittance is in found to be in good agreement with experiment results.
通过观察，直接由网络写出导纳矩阵，并由其求解电路。
By observing the network, the admittance matrix is written directly and thus circuit can be solved.
本文讨论用导纳矩阵描述多节点运算放大器电路的有用方法。
This paper discusses an useful method by which the multiple nodes circuit composed of the operational amplifier is described using admittance matrix.
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