A theoretical method to solve acoustical radiation modes and acoustical radiation efficiency of complex structure by a boundary element method and acoustical radiation theory is posed in this paper.

提出一种用边界元方法与声辐射理论求解复杂结构的声辐射模态与声辐射效率的理论方法。

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The efficiency of noise reduction of curved surface at Acoustical shielding exit is better in comparison with Plain surface.

曲面型噪声遮蔽出口的降噪能力要好于平面型出口。

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