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 102 58.6%
2 United States 37 21.3%
3 Germany 16 9.2%
4 Hong Kong 5 2.9%
5 Taiwan 4 2.3%
6 Canada 3 1.7%
7 Iran, Islamic Republic of 2 1.1%
8 Ireland 1 0.6%
9 Portugal 1 0.6%
10 Russia 1 0.6%
11 Sweden 1 0.6%
12 1 0.6%