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 122 54%
2 United States 56 24.8%
3 Canada 17 7.5%
4 Taiwan 8 3.5%
5 Korea, Republic of 7 3.1%
6 Senegal 5 2.2%
7 India 5 2.2%
8 Netherlands 2 0.9%
9 Switzerland 1 0.4%
10 Japan 1 0.4%
11 Germany 1 0.4%
12 United Kingdom 1 0.4%