BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 163 58.6%
2 Germany 51 18.3%
3 United States 50 18%
4 Canada 3 1.1%
5 Turkey 2 0.7%
6 Moldova, Republic of 2 0.7%
7 Netherlands 2 0.7%
8 Singapore 1 0.4%
9 Hong Kong 1 0.4%
10 Korea, Republic of 1 0.4%
11 Denmark 1 0.4%
12 Estonia 1 0.4%