BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 172 56%
2 United States 54 17.6%
3 Germany 29 9.4%
4 Canada 20 6.5%
5 Russia 7 2.3%
6 Netherlands 4 1.3%
7 Taiwan 3 1%
8 Bulgaria 3 1%
9 Estonia 3 1%
10 Moldova, Republic of 3 1%
11 Hong Kong 2 0.7%
12 Japan 2 0.7%
13 United Arab Emirates 2 0.7%
14 United Kingdom 1 0.3%
15 Spain 1 0.3%
16 Nepal 1 0.3%