久久久久久亚洲精品a片成人,一二三四在线观看免费高清视频,色婷婷五月在线精品视频,国产色视频自在线观看

This standard is developed to implement laws and regulations such as the Law of the People's Republic of China on the Prevention and Control of Radioactive Pollution and the Regulations on the Safety and Protection of Radioactive Isotopes and Radiation Devices, to safeguard human health, protect the ecological environment, and standardize radiation safety in nuclear medicine. This standard specifies radiation protection and safety requirements for nuclear medicine, including general principles, site selection and layout, radiation safety and protection in the workplace, radioactive waste management, radiation monitoring, etc. Appendix A to C of this standard is informational appendix. This standard is the first release.