Institute;
of;
Vertebrate;
Paleontology;
and;
Paleoanthropology,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100044,;
China;
Laboratory;
of;
Human;
Evolution;
and;
Archaeometry,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100044,;
China;
Graduate;
University;
of;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100049,;
China;
The;
Royal;
Ontario;
Museum,;
Toronto;
M5S;
2C6,;
Canada;
旧石器时代晚期; 中国北方; 磨损; 证据; 石材加工工具; 木工工具; 中国网站; 技术分析;