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 106 50.2%
2 United States 50 23.7%
3 Netherlands 21 10%
4 Korea, Republic of 7 3.3%
5 Sweden 6 2.8%
6 Senegal 5 2.4%
7 France 5 2.4%
8 India 5 2.4%
9 Taiwan 3 1.4%
10 Germany 2 0.9%
11 Canada 1 0.5%