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 81 41.1%
2 United States 39 19.8%
3 Germany 35 17.8%
4 Russia 11 5.6%
5 Japan 5 2.5%
6 Netherlands 5 2.5%
7 Sweden 4 2%
8 Korea, Republic of 3 1.5%
9 Hong Kong 2 1%
10 India 2 1%
11 Czech Republic 2 1%
12 United Kingdom 2 1%
13 Singapore 2 1%
14 France 2 1%
15 Egypt 1 0.5%
16 Poland 1 0.5%