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 434 48.5%
2 United States 178 19.9%
3 Netherlands 163 18.2%
4 Germany 66 7.4%
5 Canada 24 2.7%
6 France 8 0.9%
7 Singapore 6 0.7%
8 India 4 0.4%
9 Hong Kong 3 0.3%
10 Azerbaijan 2 0.2%
11 Russia 2 0.2%
12 Norway 1 0.1%
13 United Kingdom 1 0.1%
14 1 0.1%
15 Finland 1 0.1%