聲阻抗比差 的英文怎麼說
中文拼音 [shēngzǔkàngbǐchā]
聲阻抗比差
英文
acoustic contrast- 阻 : 動詞(阻擋; 阻礙) block; hinder; impede; obstruct
- 抗 : Ⅰ動詞1 (抵抗; 抵擋) resist; combat; fight 2 (拒絕; 抗拒) refuse; defy 3 (對等) contend with...
- 比 : Ⅰ動詞1 (比較; 較量高下、 長短、距離、好壞等) compare; compete; contrast; match; emulate 2 (比...
- 差 : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
- 阻抗 : [電學] impedance
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But to circular plate with large surface area, the vibrate modes generated is often so high that there is reverse phases existing, which result in a decrease in radiation impedance, electric - acoustic efficiency and the electric power, as well as poor directivity
然而對于輻射面積較大的彎曲振動圓盤,一般激勵的振動階數比較高,因此存在彎曲振動的反相區,導致換能器的輻射阻抗下降,電聲效率和聲功率降低以及指向性變差等問題。The analytical mode is based on the theory of sound propagation in layered media. the concept of equivalent parameters is established. the absorption of sound energy by damping layer ' s is represented by use of complex sound impedance
解析模型以分層介質中的波動理論為基礎,建立了等效參數的概念,並運用聲阻抗的復數表示法把阻尼層對介質層聲能吸收的影響都考慮進去,通過比較敷設消聲覆蓋層前後多層傳遞損失的差異來獲得消聲層的效率。
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