BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 36 37.5%
2 Germany 18 18.8%
3 Netherlands 16 16.7%
4 United States 14 14.6%
5 France 5 5.2%
6 Canada 4 4.2%
7 Czech Republic 1 1%
8 Sweden 1 1%
9 United Kingdom 1 1%