BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 59 50.4%
2 China 24 20.5%
3 Germany 12 10.3%
4 France 6 5.1%
5 United Kingdom 5 4.3%
6 Hong Kong 5 4.3%
7 Russia 2 1.7%
8 Senegal 2 1.7%
9 Poland 1 0.9%
10 Estonia 1 0.9%