Porous asphalts have supplementary surface and volumetric properties(e.g.,acoustic ab-sorption,drain ability,texture,and......

多个有源吸声单元可构成有源吸声层，用于吸收任意方向入射的低频声波。本文利用声弹性理论研究吸声单元的声场与振动特性，从理论上计......