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 32 28.6%
2 United States 24 21.4%
3 Netherlands 15 13.4%
4 Sweden 11 9.8%
5 Russia 8 7.1%
6 Korea, Republic of 6 5.4%
7 Germany 5 4.5%
8 Canada 4 3.6%
9 Turkey 2 1.8%
10 Ukraine 1 0.9%
11 United Arab Emirates 1 0.9%
12 Taiwan 1 0.9%
13 Japan 1 0.9%
14 Czech Republic 1 0.9%