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 321 48.6%
2 United States 167 25.3%
3 Germany 74 11.2%
4 Netherlands 45 6.8%
5 Canada 16 2.4%
6 Sweden 14 2.1%
7 France 6 0.9%
8 United Kingdom 4 0.6%
9 Korea, Republic of 3 0.5%
10 Luxembourg 2 0.3%
11 Taiwan 2 0.3%
12 Russia 2 0.3%
13 Singapore 2 0.3%
14 India 1 0.2%
15 Finland 1 0.2%