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 15 33.3%
2 China 14 31.1%
3 Iran, Islamic Republic of 6 13.3%
4 Canada 4 8.9%
5 Hong Kong 2 4.4%
6 Sweden 2 4.4%
7 Philippines 1 2.2%
8 Germany 1 2.2%