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 67 32.7%
2 China 33 16.1%
3 Netherlands 19 9.3%
4 United Kingdom 11 5.4%
5 Germany 10 4.9%
6 Japan 9 4.4%
7 Russia 7 3.4%
8 Ukraine 7 3.4%
9 Colombia 7 3.4%
10 France 6 2.9%
11 India 5 2.4%
12 Switzerland 4 2%
13 Syrian Arab Republic 3 1.5%
14 Spain 3 1.5%
15 Serbia 2 1%
16 Korea, Republic of 2 1%
17 Mexico 2 1%
18 Indonesia 2 1%
19 Iran, Islamic Republic of 1 0.5%
20 Hong Kong 1 0.5%
21 Australia 1 0.5%
22 Brazil 1 0.5%
23 Canada 1 0.5%
24 Taiwan 1 0.5%