美利体育登录入口官网:LST EN ISO 5135:2020 声学 通过在混响测试室中测量来确定接闪器、接闪器、阻尼器和阀门噪声的声功率级(ISO 5135:2020)
Acoustics - Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation test room (ISO 5135:2020)