词汇	gamma ray dose
释义	gamma ray dose γ-射线剂量
随便看	principal-distance error principal distance focusing principal distance of camera principal distance of photo principal distance of projector Principal Distribution Depot principal distribution function principal distribution parameter principal ditch principal divisor principal dock principal documents principal drawback principal drug principal duty principale principal earner principal earthquake Principal economic trees in South China principal edition principal education Principal Education Officer principal effect principal efficacy principal eigenvalue