GB/T 3239-1982
Active
DB1304/T 433-2023
Active
Hebei ProvinceLocal standards
DB1304/T 433-2023 Patent quality evaluation technical specifications
DB1304/T 433-2023 Patent quality evaluation technical specifications
Basic Information
Standard Code:
DB1304/T 433-2023
Standard Type:
Local standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Technical management
ICS Name:
\nNoise (related to humans)
Publish Date:
2023-08-21
Implement Date:
2023-08-30
Pages:
9 pages
Development Information
Related Standards
GB/T 4963-1985
Replaced
GB/T 4963-1985 Normal equal-loudness contours for pure tones under free field listening conditions
GB/T 7582-1987
Replaced
GB/T 7582-1987 Acoustics—Threshold of hearing by air conduction as a function of age and sex for otologically normal persons
GB/T 7583-1987
Active
GB/T 7583-1987 Acoustics—Pure tone air conduction threshold audiometry—For hearing conservation purposes
GB 14227-1993
Replaced
GB 14227-1993 Noise limits on platform of subway station
GB/T 14228-1993
Replaced