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 13 33.3%
2 Iran, Islamic Republic of 5 12.8%
3 United Kingdom 5 12.8%
4 United States 5 12.8%
5 Germany 3 7.7%
6 Netherlands 3 7.7%
7 Russia 2 5.1%
8 Sweden 1 2.6%
9 Poland 1 2.6%
10 Korea, Republic of 1 2.6%