NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 9068-1988
Determination of sound power levels for noise emitted by heating,ventilating and air conditioning equipments--Engineering method 采暖通风与空气调节设备噪声声功率级的测定 工程法
Issued Date:1988-04-18
Implemented Date:1989-01-01
Issued by:
The Standardization Administration of the People's Republic of China