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 162 50.2%
2 United States 93 28.8%
3 Germany 44 13.6%
4 Russia 4 1.2%
5 India 3 0.9%
6 Korea, Republic of 2 0.6%
7 Norway 2 0.6%
8 Hong Kong 2 0.6%
9 Singapore 2 0.6%
10 Spain 2 0.6%
11 Sweden 2 0.6%
12 United Kingdom 2 0.6%
13 France 1 0.3%
14 Canada 1 0.3%
15 Luxembourg 1 0.3%