标称特性阻抗

[电] normalized characteristic imped-ance

biāo chēng tè xìng zǔ kàng ㄅㄧㄠ ㄔㄥ ㄊㄜˋ ㄒㄧㄥˋ ㄗㄨˇ ㄎㄤˋ