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 40 39.6%
2 China 25 24.8%
3 United Kingdom 14 13.9%
4 Russia 5 5%
5 Ukraine 3 3%
6 Czech Republic 2 2%
7 India 2 2%
8 Netherlands 2 2%
9 Poland 2 2%
10 Moldova, Republic of 1 1%
11 Estonia 1 1%
12 France 1 1%
13 Germany 1 1%
14 Hong Kong 1 1%
15 Spain 1 1%