X _ ray energy spectrum
cosmic ray
宇宙
宇宙射线
宇宙线[天]
银河宇宙线
地面宇宙线
宇宙线
宇宙光
宇宙<射>线
宇宙﹝射﹞线
cosmic ray exposure age
cosmic ray muon radiography
cosmic ray produced nuclide
cosmic ray radiation age
anomaly of γ ray spectrum
characteristic X ray spectrum
contiuous X ray spectrum
extraordinary ray spectrum
natural gamma ray spectrum logging