Using sound - absorbing material made of the device used to reduce fan noise.

用吸音材料制成的装置用来减小风机的噪声.

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Aluminum fibre porous sound - absorbing panel is a new type of sound - absorbing material.

铝纤维多孔吸声板是一种新型吸声材料.

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The effect of cotton on the type of sound - absorbing material than leather.

棉布类的吸音效果就大于皮革类的材料.

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A new type of porous sound absorbing material was made from - strength gypsum and glass fiber.

以 高强 石膏为胶凝材料,内掺玻璃纤维,制备出一种新型多孔吸声材料.

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A new type of porous sound absorbing material was made from super - strength gypsum and glass fiber.

摘要以 高强 石膏为胶凝材料,内掺玻璃纤维,制备出一种新型多孔吸声材料.

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