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 178 51.7%
2 United States 60 17.4%
3 Canada 42 12.2%
4 Germany 33 9.6%
5 Taiwan 11 3.2%
6 Hong Kong 4 1.2%
7 Ireland 4 1.2%
8 Netherlands 3 0.9%
9 Singapore 2 0.6%
10 Brazil 2 0.6%
11 Iran, Islamic Republic of 2 0.6%
12 Japan 1 0.3%
13 Luxembourg 1 0.3%
14 Romania 1 0.3%