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 123 43.6%
2 United States 88 31.2%
3 Germany 25 8.9%
4 Netherlands 11 3.9%
5 Korea, Republic of 10 3.5%
6 Russia 6 2.1%
7 Senegal 4 1.4%
8 Taiwan 3 1.1%
9 Brazil 2 0.7%
10 Hong Kong 2 0.7%
11 Japan 2 0.7%
12 Finland 2 0.7%
13 France 2 0.7%
14 Sweden 1 0.4%
15 United Kingdom 1 0.4%