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 63 45.3%
2 United States 20 14.4%
3 Germany 14 10.1%
4 Netherlands 12 8.6%
5 France 12 8.6%
6 Russia 9 6.5%
7 Sweden 5 3.6%
8 United Kingdom 3 2.2%
9 Czech Republic 1 0.7%