The;
College;
of;
Applied;
Nuclear;
Technology;
and;
Automation;
Engineering,;
Chengdu;
University;
of;
Technology,;
Chengdu;
610059,;
China;
College;
o;
fin;
formation;
Engineering,;
Chengdu;
University;
of;
Technology,;
Chengdu;
610059,;
China;
College;
of;
Earth;
Sciences,;
Chengdu;
University;
of;
Technology,;
Chengdu;
610059,;
China;