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directional 音标拼音: [dɚ'ɛkʃənəl] [dir'ɛkʃɪnəl] [dɑɪr'ɛkʃɪnəl] [dɪr'ɛkʃɪnəl] a. 方向的 方向的 directional 方向 定向 向 directional adj 1: relating to or indicating directions in space; "a directional microphone" [ant: {omnidirectional}] 2: relating to direction toward a (nonspatial) goal; "he tried to explain the directional trends of modern science" 3: showing the way by conducting or leading; imposing direction on; "felt his mother's directing arm around him"; "the directional role of science on industrial progress" [synonym: {directing}, {directional}, {directive}, {guiding}] directional \directional\ adj. 1. of or pertaining to direction (definition 2). [WordNet 1.5] 2. serving to indicate direction. [PJC] 3. (Radio) transmitting radio signals in a specific direction, or receiving signals only from a narrow angle of directions, thus serving to indicate the direction from which radio signals are coming. Used of antennas; as, a directional antenna. [PJC]
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