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 86 46%
2 United States 43 23%
3 Netherlands 16 8.6%
4 Germany 13 7%
5 Korea, Republic of 7 3.7%
6 Hong Kong 5 2.7%
7 Senegal 4 2.1%
8 Singapore 3 1.6%
9 France 3 1.6%
10 Finland 2 1.1%
11 United Kingdom 2 1.1%
12 Taiwan 1 0.5%
13 Iran, Islamic Republic of 1 0.5%
14 Russia 1 0.5%