The;
key;
Laboratory;
of;
Contemporary;
Design;
and;
Integrated;
Manufacturing;
Technology,;
Ministry;
of;
Education,;
Northwestern;
Polytechnical;
University,;
Xi＇an;
710072,;
China;
School;
of;
Science,;
Xi＇an;
University;
of;
Architecture;
＆;
Technology,;
Xi＇an;
710055,;
China;
