英文標(biāo)準(zhǔn)名稱:Acoustics—Procedures for determination of transmission loss, flow noise and total pressure loss coefficient for arrayed element dissipative silencers—Equivalent measurement
英文標(biāo)準(zhǔn)名稱:Acoustics—Procedures for determination of transmission loss, flow noise and total pressure loss coefficient for arrayed element dissipative silencers—Equivalent measurement