Directivity
美 [dɪrek'tɪvɪtɪ]英 [dɪrek'tɪvɪtɪ]
- n.指向性;方向系数;定向性
- 网络方向性;指向特性;天线方向性

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Numerical computation and experimental test of directivity pattern of low frequency flex-tensional transducer