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 52 36.9%
2 China 25 17.7%
3 United Kingdom 20 14.2%
4 Russia 15 10.6%
5 Germany 11 7.8%
6 Taiwan 5 3.5%
7 France 4 2.8%
8 Ukraine 2 1.4%
9 Canada 2 1.4%
10 Estonia 2 1.4%
11 Czech Republic 1 0.7%
12 Netherlands 1 0.7%
13 Poland 1 0.7%