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 193 64.8%
2 United States 50 16.8%
3 Germany 38 12.8%
4 Russia 4 1.3%
5 Netherlands 3 1%
6 Taiwan 2 0.7%
7 United Kingdom 2 0.7%
8 Hong Kong 2 0.7%
9 Croatia 2 0.7%
10 Singapore 1 0.3%
11 Sweden 1 0.3%