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 60 42.3%
2 China 39 27.5%
3 Germany 20 14.1%
4 France 6 4.2%
5 Korea, Republic of 4 2.8%
6 Senegal 4 2.8%
7 Taiwan 2 1.4%
8 Brazil 2 1.4%
9 Canada 2 1.4%
10 India 2 1.4%
11 United Kingdom 1 0.7%