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 United States 189 44.9%
2 China 157 37.3%
3 Germany 29 6.9%
4 Hong Kong 8 1.9%
5 Taiwan 8 1.9%
6 Japan 6 1.4%
7 United Kingdom 5 1.2%
8 Netherlands 4 1%
9 Korea, Republic of 3 0.7%
10 France 2 0.5%
11 Australia 2 0.5%
12 Canada 2 0.5%
13 Russia 2 0.5%
14 United Arab Emirates 2 0.5%
15 Ukraine 1 0.2%
16 Italy 1 0.2%