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 110 44.5%
2 United States 66 26.7%
3 Germany 24 9.7%
4 Russia 8 3.2%
5 Netherlands 7 2.8%
6 Korea, Republic of 6 2.4%
7 Senegal 4 1.6%
8 Ireland 3 1.2%
9 France 3 1.2%
10 Norway 3 1.2%
11 Japan 2 0.8%
12 Czech Republic 2 0.8%
13 Brazil 2 0.8%
14 Canada 1 0.4%
15 Finland 1 0.4%
16 India 1 0.4%
17 Serbia 1 0.4%
18 Taiwan 1 0.4%
19 Malaysia 1 0.4%
20 Nigeria 1 0.4%