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 223 57.5%
2 United States 68 17.5%
3 Germany 34 8.8%
4 Netherlands 31 8%
5 Taiwan 6 1.5%
6 United Kingdom 5 1.3%
7 Ireland 5 1.3%
8 Italy 4 1%
9 Sweden 3 0.8%
10 Russia 2 0.5%
11 Singapore 2 0.5%
12 Canada 2 0.5%
13 Austria 1 0.3%
14 Finland 1 0.3%
15 Korea, Republic of 1 0.3%