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 202 59.1%
2 United States 74 21.6%
3 Germany 24 7%
4 Canada 12 3.5%
5 Hong Kong 6 1.8%
6 United Kingdom 4 1.2%
7 Sweden 4 1.2%
8 Russia 3 0.9%
9 Senegal 2 0.6%
10 Lithuania 2 0.6%
11 Malaysia 2 0.6%
12 Netherlands 2 0.6%
13 France 2 0.6%
14 Moldova, Republic of 1 0.3%
15 Switzerland 1 0.3%
16 Turkey 1 0.3%