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 46 46%
2 United States 21 21%
3 Netherlands 16 16%
4 Sweden 3 3%
5 France 3 3%
6 Canada 3 3%
7 Hong Kong 3 3%
8 Russia 2 2%
9 Serbia 2 2%
10 Germany 1 1%