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1.This new type of acoustical material is highly efficient in reducing sound transmission.
这种新型的声学电介质材料在减少声音传播方面非常高效。
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2. The acoustical material used in the building is designed to absorb sound waves and reduce noise pollution.
建筑物中使用的声学材料设计用来吸收声波，减少噪音污染。
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3. Acoustical materials are widely used in engineering, such as in the construction of soundproof rooms and the design of acoustical systems.
声学材料在工程中被广泛使用，例如在隔音室的建设以及声学系统的设计与制造中。