“sound absorbing material”簡單造句，sound absorbing material造句子

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

For example, specification will describe that ducts may be made of galvanized-iron. When galvanized-iron is used, it may be lined with sound absorbing material, to reduce noise from movement of air.

The nonwoven fabric (20) of the sound absorbing material (10) as vehicle exterior equipment may consist of two types of nonwoven fabrics (22,24) superimposed on each other.