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 40 26.3%
2 China 24 15.8%
3 Netherlands 21 13.8%
4 Germany 20 13.2%
5 Canada 17 11.2%
6 France 5 3.3%
7 India 5 3.3%
8 Russia 4 2.6%
9 Portugal 3 2%
10 Taiwan 3 2%
11 Korea, Republic of 3 2%
12 Ireland 2 1.3%
13 Japan 2 1.3%
14 Romania 2 1.3%
15 Singapore 1 0.7%