60.測量Co-60光子劑量時,為達電子平衡,套管游離腔(thimble chamber)的腔壁厚度需約多少
mm?
(A)0.1
(B)0.5
(C)1
(D)5
答案:登入後查看
統計: A(47), B(286), C(229), D(383), E(0) #1053415
統計: A(47), B(286), C(229), D(383), E(0) #1053415