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 230 58.2%
2 United States 48 12.2%
3 Netherlands 47 11.9%
4 Germany 39 9.9%
5 Canada 16 4.1%
6 Russia 4 1%
7 Singapore 2 0.5%
8 Hong Kong 2 0.5%
9 United Kingdom 2 0.5%
10 Norway 1 0.3%
11 India 1 0.3%
12 Latvia 1 0.3%
13 Taiwan 1 0.3%
14 Turkey 1 0.3%