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4πβ(PC)--γ符合活度副基準操作技術規范

O.T.N. of 4πβ(PC)-γ Coincidence Secondary Standard of Measuring Activity
標準號:JJF 1337-1990
O.T.N. of 4πβ(PC)-γ Coincidence Secondary Standard of Measuring Activity
標準號:JJF 1337-1990