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 50 33.1%
2 China 33 21.9%
3 United Kingdom 20 13.2%
4 Russia 18 11.9%
5 Germany 10 6.6%
6 France 5 3.3%
7 Taiwan 5 3.3%
8 Moldova, Republic of 3 2%
9 Canada 2 1.3%
10 Estonia 2 1.3%
11 Finland 1 0.7%
12 Spain 1 0.7%
13 Ukraine 1 0.7%