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 541 45.7%
2 United States 219 18.5%
3 Netherlands 192 16.2%
4 Germany 120 10.1%
5 France 46 3.9%
6 Canada 17 1.4%
7 Sweden 12 1%
8 Korea, Republic of 6 0.5%
9 India 5 0.4%
10 Cote D'ivoire 4 0.3%
11 Russia 4 0.3%
12 Ireland 3 0.3%
13 Italy 3 0.3%
14 Hong Kong 2 0.2%
15 Senegal 2 0.2%
16 Singapore 2 0.2%
17 Taiwan 2 0.2%
18 Ukraine 2 0.2%
19 United Kingdom 1 0.1%
20 Belarus 1 0.1%
21 Mongolia 1 0.1%