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 127 55.2%
2 United States 54 23.5%
3 France 9 3.9%
4 Korea, Republic of 8 3.5%
5 Sweden 8 3.5%
6 Netherlands 7 3%
7 Senegal 6 2.6%
8 Germany 3 1.3%
9 India 3 1.3%
10 Finland 2 0.9%
11 Mexico 1 0.4%
12 Ukraine 1 0.4%
13 Canada 1 0.4%