nonradioactive造句
Isn'tthenonradioactiveformofthalliumusedforratpoison?Howitworks:ApatientinhaleshaimlessnonradioactiveXenongas,whichistrackedbyascannerasitentersthebrain....
Isn'tthenonradioactiveformofthalliumusedforratpoison?Howitworks:ApatientinhaleshaimlessnonradioactiveXenongas,whichistrackedbyascannerasitentersthebrain....