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 29 22%
2 China 27 20.5%
3 Netherlands 19 14.4%
4 Korea, Republic of 13 9.8%
5 India 7 5.3%
6 Ecuador 6 4.5%
7 Russia 6 4.5%
8 Switzerland 6 4.5%
9 Japan 5 3.8%
10 Singapore 3 2.3%
11 Italy 3 2.3%
12 Canada 2 1.5%
13 Serbia 2 1.5%
14 Mexico 1 0.8%
15 Ireland 1 0.8%
16 France 1 0.8%
17 Germany 1 0.8%