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 100 51.3%
2 Netherlands 27 13.8%
3 United States 17 8.7%
4 Russia 16 8.2%
5 Germany 15 7.7%
6 France 10 5.1%
7 Canada 5 2.6%
8 Singapore 2 1%
9 United Kingdom 2 1%
10 Czech Republic 1 0.5%