A.1% B.3% C.5% D.10% E.20%
A.≥0.14~0.25/(min.Bq) B.≥1.4~2.5/(min.Bq) C.≥0.14~0.25/(seC.Bq) D.≥114~2.5/(seC.Bq) E.≥14~25/(min.Bq)
A.粒子能量 B.能散度 C.發(fā)射度 D.亮度 E.束流強(qiáng)度