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 189 63.9%
2 United States 36 12.2%
3 Germany 27 9.1%
4 Netherlands 17 5.7%
5 Taiwan 8 2.7%
6 Hong Kong 6 2%
7 Singapore 5 1.7%
8 Russia 4 1.4%
9 Burkina Faso 2 0.7%
10 Canada 1 0.3%
11 South Africa 1 0.3%