一种在某些特定的方向上可以更高效率地发射和接收无线电频率(RF)信号的天线。
An ANTENNA that radiates or receives RADIO FREQUENCY (RF) signals more efficiently in some directions than in others.
一种在某些特定的方向上可以更高效率地发射和接收无线电频率(RF)信号的天线。
An ANTENNA that radiates or receives RADIO FREQUENCY (RF) signals more efficiently in some directions than in others.
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