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 139 59.1%
2 United States 38 16.2%
3 Germany 37 15.7%
4 United Kingdom 4 1.7%
5 Russia 3 1.3%
6 Malaysia 2 0.9%
7 Netherlands 2 0.9%
8 Hong Kong 2 0.9%
9 Finland 2 0.9%
10 Sweden 2 0.9%
11 Ukraine 1 0.4%
12 Canada 1 0.4%
13 India 1 0.4%
14 Singapore 1 0.4%