词汇	言外
释义	言外 yán wàiillocution
随便看	directivity discrimination directivity effect directivity factor directivity factor of loudspeaker directivityfor wtgs directivity function directivity gain directivity graph directivity index directivity index of a sound source directivity index of microphone directivity index of telephone transmitter directivity directivity angle directivity characteristic directivity coefficient directivity deviation directivity diagram directivity diagram laser directivity of a microphone directivity of an antenna directivity of antenna directivity of loudspeaker directivity on horizontal plane directivity on vertical plane