根据美国fda下属放射安全卫生部门(bureau of radiological health,brh)现定,在手动透视条件时控制为 sr/min以下,自动曝光条件时为 10r/min 以下。
双语例句
1
PHS BureauofRadiologicalHealth transferred to FDA. Its mission: protection against unnecessary human exposure to radiation from electronic products in the home, industry, and the healing arts.