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 54 40.9%
2 China 31 23.5%
3 Germany 7 5.3%
4 Netherlands 7 5.3%
5 United Kingdom 6 4.5%
6 Poland 3 2.3%
7 Portugal 3 2.3%
8 Iran, Islamic Republic of 3 2.3%
9 Korea, Republic of 3 2.3%
10 Lithuania 3 2.3%
11 Australia 3 2.3%
12 Austria 2 1.5%
13 Peru 2 1.5%
14 Philippines 2 1.5%
15 Sweden 2 1.5%
16 Hong Kong 1 0.8%