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 20 29%
2 Netherlands 16 23.2%
3 Germany 13 18.8%
4 United States 7 10.1%
5 5 7.2%
6 France 4 5.8%
7 Czech Republic 2 2.9%
8 Sweden 1 1.4%
9 United Arab Emirates 1 1.4%