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DIN EN 1793-4
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 4: Intrinsic characteristics - In situ values of sound diffraction; German and English version prEN 1793-4:2023
NA 119-01-03-01-17 AK -dormant
pH value
NA 009-00-15-06 AK -dormant
Working group Retention of evidence of cryptographically signed documents
NA 080-00-06-07 AK -dormant
6868-13 Pixel value
IEC/CIS/H
Limits for the protection of radio services
NA 041-01-32 AA -dormant
Oil-fired condensing boilers
NA 041-01-23 AA -dormant
Condensing boilers for gas
NA 134-02-02-64 UA
Reference values for thermal issues
NA 134-02-01-35 UA
Environmental meteorology - Turbulence parameters for dispersion models supported by measurement data