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 49 34.5%
2 China 34 23.9%
3 United Kingdom 20 14.1%
4 Russia 16 11.3%
5 France 6 4.2%
6 Taiwan 5 3.5%
7 Germany 4 2.8%
8 Estonia 3 2.1%
9 Netherlands 2 1.4%
10 Poland 2 1.4%
11 Moldova, Republic of 1 0.7%