例句與造句

1. Directivity index of microphone
   傳聲器指向性指數(shù)
2. The al - di ( articulation index weighted - directivity index ) , which is a measure for the improvement of the signal - to - noise ratio , is increased by about 30 percent for the trimictm technology . this corresponds to an improvement in speech intelligibility of up to 30 %
   研究亦顯示，在吵雜環(huán)境中，即語(yǔ)音與噪音的比率較差時(shí)，方向性麥克風(fēng)對(duì)聽(tīng)障者尤其有效，言語(yǔ)理解能力可提升至30 % ，使聽(tīng)障者更容易與人交談。
3. It's difficult to find directivity index in a sentence. 用directivity index造句挺難的