BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 33 37.5%
2 Germany 14 15.9%
3 China 9 10.2%
4 France 6 6.8%
5 Mexico 5 5.7%
6 Portugal 4 4.5%
7 Switzerland 3 3.4%
8 Iran, Islamic Republic of 3 3.4%
9 Korea, Republic of 2 2.3%
10 Czech Republic 2 2.3%
11 Belgium 2 2.3%
12 Brazil 2 2.3%
13 Italy 1 1.1%
14 Taiwan 1 1.1%
15 United Kingdom 1 1.1%