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 55 39.6%
2 United States 29 20.9%
3 Netherlands 22 15.8%
4 Germany 11 7.9%
5 Egypt 7 5%
6 Hong Kong 4 2.9%
7 Canada 3 2.2%
8 United Kingdom 2 1.4%
9 Russia 2 1.4%
10 Estonia 2 1.4%
11 Czech Republic 1 0.7%
12 Taiwan 1 0.7%