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 165 52.9%
2 United States 56 17.9%
3 Germany 39 12.5%
4 Taiwan 21 6.7%
5 Hong Kong 6 1.9%
6 Denmark 6 1.9%
7 United Kingdom 5 1.6%
8 Japan 4 1.3%
9 Italy 3 1%
10 3 1%
11 Canada 1 0.3%
12 Korea, Republic of 1 0.3%
13 Sweden 1 0.3%
14 Ukraine 1 0.3%