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 United States 136 44.9%
2 China 116 38.3%
3 Netherlands 9 3%
4 Russia 7 2.3%
5 Germany 7 2.3%
6 Hong Kong 5 1.7%
7 Canada 4 1.3%
8 Korea, Republic of 4 1.3%
9 United Kingdom 3 1%
10 Nigeria 2 0.7%
11 Philippines 2 0.7%
12 France 2 0.7%
13 Israel 2 0.7%
14 Japan 1 0.3%
15 India 1 0.3%
16 Ireland 1 0.3%
17 Switzerland 1 0.3%