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 114 52.1%
2 United States 59 26.9%
3 France 8 3.7%
4 Korea, Republic of 8 3.7%
5 Senegal 8 3.7%
6 Netherlands 7 3.2%
7 Sweden 6 2.7%
8 India 3 1.4%
9 Germany 2 0.9%
10 Switzerland 2 0.9%
11 Canada 1 0.5%
12 Singapore 1 0.5%