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 220 61.3%
2 United States 56 15.6%
3 Germany 27 7.5%
4 Canada 27 7.5%
5 Russia 5 1.4%
6 Hong Kong 4 1.1%
7 Brazil 3 0.8%
8 Italy 3 0.8%
9 Sweden 3 0.8%
10 Taiwan 2 0.6%
11 Norway 2 0.6%
12 United Kingdom 2 0.6%
13 Luxembourg 2 0.6%
14 Mauritius 1 0.3%
15 Ireland 1 0.3%
16 Turkey 1 0.3%