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 448 54.7%
2 United States 128 15.6%
3 Netherlands 127 15.5%
4 Germany 56 6.8%
5 Russia 14 1.7%
6 Canada 13 1.6%
7 Sweden 6 0.7%
8 United Kingdom 6 0.7%
9 Singapore 5 0.6%
10 France 5 0.6%
11 Hong Kong 3 0.4%
12 India 3 0.4%
13 Nigeria 2 0.2%
14 Bahamas 2 0.2%
15 Norway 1 0.1%