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 175 38.8%
2 China 140 31%
3 Germany 29 6.4%
4 Netherlands 28 6.2%
5 Korea, Republic of 20 4.4%
6 Austria 13 2.9%
7 Lithuania 8 1.8%
8 United Kingdom 5 1.1%
9 Finland 4 0.9%
10 France 4 0.9%
11 Sweden 4 0.9%
12 Switzerland 3 0.7%
13 Taiwan 3 0.7%
14 Norway 3 0.7%
15 Canada 3 0.7%
16 India 2 0.4%
17 Ireland 1 0.2%
18 Italy 1 0.2%
19 Japan 1 0.2%
20 Russia 1 0.2%
21 Singapore 1 0.2%
22 Spain 1 0.2%
23 Togo 1 0.2%