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 97 36.5%
2 China 34 12.8%
3 Netherlands 23 8.6%
4 Germany 19 7.1%
5 India 13 4.9%
6 Korea, Republic of 6 2.3%
7 France 6 2.3%
8 Russia 6 2.3%
9 United Kingdom 6 2.3%
10 Japan 5 1.9%
11 Sweden 5 1.9%
12 Norway 5 1.9%
13 Brazil 5 1.9%
14 Canada 4 1.5%
15 Bolivia, Plurinational State of 4 1.5%
16 Egypt 3 1.1%
17 Colombia 3 1.1%
18 Mexico 3 1.1%
19 South Africa 3 1.1%
20 Spain 2 0.8%
21 Pakistan 2 0.8%
22 Taiwan 2 0.8%
23 Iran, Islamic Republic of 2 0.8%
24 Italy 2 0.8%
25 Indonesia 1 0.4%
26 Hong Kong 1 0.4%
27 Cote D'ivoire 1 0.4%
28 Australia 1 0.4%
29 Chile 1 0.4%
30 Viet Nam 1 0.4%