??????????; Sn/A1/Bi2/0.6 ????????/Sn50-1000ppm
?????????????; ND??δ???(??NDL??
????????
(1)??????????ˉ???,?????????С??????????????????235??--300??
???(?????????????????????235?棭450????????????????????
????????Ч?????????)??
(2)?????????????????????????,???????????Ч?????á?
(3)?????庸??ˉ???,?????μ?????????,???????????ò?????????????
??????????
(1)????????????????????λ??????????????,????? (????????????
???), ?????(???????????????,????????ο????????????????????),???????????????????????????????ˉ?С?1-2??????????????,???????????????????????????????
?????????
(1)?????????????????????,?????,?????,????,????,???????????
????????,???????????????????????(?ο????)??
???淽????
(1)???????????????????????±??漴??,????????δ???,??????????