在箱体尺寸受限帛的条件下，利用有限的空间实现了较大的降噪量，取得了良好效果。
Under the limited size of the enclosure, the higher noise reduction is obtained in limited space, and good effectiveness is gained.
该箱体的最佳尺寸是：长度为470毫米、宽度为350毫米、高度为590毫米。
Best size of the case is: 470 mm as length, 350 mm as width and 590 mm as height.
由于箱体的尺寸规格多样可以安客户要求定做。
Because the size of box is various, we can design according to customer requirements.
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