射性物质 Naturally Occurring Radioactive Material

放射性物质 radioactive materials ; Radioactive substances ; radioactive material

放射性物质包装 radioactive materials packaging

天然放射性物质 NORM ; naturally occurring radioactive materials

放射性物质化学 chemistry of radioactive substances

人工放射性物质 artificial radioactive substance ; substance, artificial radioactive

强放射性物质 hot material ; material hot

低比度放射性物质 low specific activity material

放射性物质运输指数 Transport Index for Radioactive Materials

强放射性物质实验室 hot laboratory