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 United States 41 40.6%
2 China 26 25.7%
3 United Kingdom 11 10.9%
4 Russia 8 7.9%
5 India 3 3%
6 France 3 3%
7 Germany 3 3%
8 Estonia 2 2%
9 Poland 2 2%
10 Moldova, Republic of 1 1%
11 Hong Kong 1 1%