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 211 63.9%
2 United States 46 13.9%
3 Germany 28 8.5%
4 Russia 9 2.7%
5 Hong Kong 8 2.4%
6 Singapore 7 2.1%
7 Japan 5 1.5%
8 Ireland 4 1.2%
9 Switzerland 3 0.9%
10 Taiwan 3 0.9%
11 Finland 2 0.6%
12 France 2 0.6%
13 Netherlands 2 0.6%