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 50 38.2%
2 United States 40 30.5%
3 Netherlands 9 6.9%
4 Germany 7 5.3%
5 Russia 6 4.6%
6 Philippines 5 3.8%
7 Iran, Islamic Republic of 4 3.1%
8 United Kingdom 4 3.1%
9 Hong Kong 3 2.3%
10 France 1 0.8%
11 Canada 1 0.8%
12 Sweden 1 0.8%