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 United States 21 28.4%
2 China 16 21.6%
3 Germany 12 16.2%
4 Sweden 11 14.9%
5 Senegal 6 8.1%
6 Netherlands 5 6.8%
7 Russia 1 1.4%
8 Moldova, Republic of 1 1.4%
9 France 1 1.4%