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 323 45.1%
2 United States 186 26%
3 Netherlands 61 8.5%
4 Germany 54 7.5%
5 Sweden 19 2.7%
6 Canada 11 1.5%
7 France 9 1.3%
8 Korea, Republic of 7 1%
9 Ireland 6 0.8%
10 Switzerland 6 0.8%
11 Norway 5 0.7%
12 Denmark 4 0.6%
13 Finland 4 0.6%
14 Hong Kong 3 0.4%
15 Italy 3 0.4%
16 Japan 2 0.3%
17 India 2 0.3%
18 Brazil 2 0.3%
19 Burkina Faso 2 0.3%
20 Philippines 2 0.3%
21 Taiwan 2 0.3%
22 United Kingdom 2 0.3%
23 Russia 1 0.1%