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单词 directional antenna
例句 DEFINITIVE EXAMPLES 权威例句〔directional〕The radio has a directional antenna.这台收音机有定向天线。韦氏高阶〔goniometer〕A radio receiver and directional antenna used 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美国传统
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