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 237 60.6%
2 United States 60 15.3%
3 Germany 37 9.5%
4 Korea, Republic of 16 4.1%
5 Canada 15 3.8%
6 Russia 6 1.5%
7 Japan 4 1%
8 Austria 2 0.5%
9 Belarus 2 0.5%
10 Brazil 2 0.5%
11 India 2 0.5%
12 Ireland 2 0.5%
13 Singapore 2 0.5%
14 Philippines 2 0.5%
15 United Kingdom 1 0.3%
16 Netherlands 1 0.3%