power level的用法和樣例：
例句
- It is shown that the numerical results of the total sound power level and the sound directivity of the original AFF agree well with those results by testing.
結果表明，采用數值計算的方法得到原型軸流風(fēng)扇的總聲功率級和聲源指向性與實(shí)驗測試結果吻合較好。 - In consideration of the directivity and acoustic power, the input voltage distribution of a loudspeaker array can be optimized and selected.
運用該方法可以?xún)?yōu)化揚聲器陣列的輸入電壓分布，獲得指向性和聲功率級二者兼顧的揚聲器陣列。
