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 224 47%
2 United States 158 33.1%
3 Germany 39 8.2%
4 Hong Kong 8 1.7%
5 Russia 7 1.5%
6 Canada 6 1.3%
7 Japan 5 1%
8 Taiwan 5 1%
9 United Kingdom 5 1%
10 Australia 4 0.8%
11 Kazakhstan 3 0.6%
12 Netherlands 3 0.6%
13 Norway 2 0.4%
14 Czech Republic 2 0.4%
15 Ireland 2 0.4%
16 Singapore 1 0.2%
17 Sweden 1 0.2%
18 Finland 1 0.2%
19 Romania 1 0.2%