| 释义 |
directional antenna短语⁸⁴³²⁰⁺⁸
基本英英例句
指向天线,定向天线
Noun:
an antenna that transmits or receives signals only in a narrow angleA radio receiver anddirectional antennaused as a system to determine the angular direction of incoming radio signals.无线方向探测器一种无线电接收和指向天线系统，用来确定收到的无线电信号的角方向 |