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 287 62.9%
2 United States 63 13.8%
3 Germany 45 9.9%
4 Netherlands 18 3.9%
5 Sweden 14 3.1%
6 Canada 13 2.9%
7 Japan 3 0.7%
8 Russia 3 0.7%
9 Hong Kong 2 0.4%
10 Italy 2 0.4%
11 Ukraine 2 0.4%
12 United Kingdom 2 0.4%
13 Switzerland 1 0.2%
14 South Africa 1 0.2%