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 China 21 27.6%
2 United States 18 23.7%
3 Germany 14 18.4%
4 Portugal 7 9.2%
5 France 5 6.6%
6 Senegal 4 5.3%
7 Spain 2 2.6%
8 Brazil 2 2.6%
9 Czech Republic 1 1.3%
10 United Kingdom 1 1.3%
11 Korea, Republic of 1 1.3%