BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 165 64.2%
2 Germany 38 14.8%
3 Netherlands 16 6.2%
4 United States 14 5.4%
5 Singapore 10 3.9%
6 United Kingdom 3 1.2%
7 France 3 1.2%
8 Estonia 2 0.8%
9 Belgium 2 0.8%
10 Burkina Faso 1 0.4%
11 Canada 1 0.4%
12 Russia 1 0.4%
13 Moldova, Republic of 1 0.4%