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 26 22.4%
2 United States 23 19.8%
3 Russia 19 16.4%
4 Netherlands 18 15.5%
5 Korea, Republic of 8 6.9%
6 Germany 7 6%
7 Sweden 4 3.4%
8 Ukraine 3 2.6%
9 United Arab Emirates 3 2.6%
10 Norway 3 2.6%
11 Czech Republic 2 1.7%