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 34 45.9%
2 United States 14 18.9%
3 Canada 7 9.5%
4 Netherlands 6 8.1%
5 Russia 4 5.4%
6 Germany 3 4.1%
7 United Kingdom 2 2.7%
8 Portugal 1 1.4%
9 Singapore 1 1.4%
10 Sweden 1 1.4%
11 Taiwan 1 1.4%