单向天线unidirectional: adj. 单向的。 antenna: n. (pl. -nae , antennas) 1.【 ...unidirectional log periodic antenna: 单向对数周期天数unidirectional log-periodic antenna: 单向对数周期天线non-unidirectional: 非单向的下载手机词典可随时随地查词查翻译