GB/T 12162.2-2004 X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy Part 2:Dosimetry for radiation protection over the energy ranges 8 keV to 1.3 MeV and 4 MeV to 9 MeV has been changed from GB/T 14053-1993 Dosimetry of 8keV-1.3MeVχ and gamma reference radiation for radiation protection.
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