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 United States 83 50.9%
2 China 36 22.1%
3 Netherlands 12 7.4%
4 Germany 11 6.7%
5 Sweden 7 4.3%
6 Russia 5 3.1%
7 France 4 2.5%
8 Philippines 3 1.8%
9 Moldova, Republic of 2 1.2%