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扇的總聲功率級和聲源指向性與實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.
運用該方法可以優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。
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