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 44 53.7%
2 United States 18 22%
3 Germany 7 8.5%
4 Hong Kong 5 6.1%
5 Taiwan 2 2.4%
6 United Kingdom 1 1.2%
7 Iran, Islamic Republic of 1 1.2%
8 Ireland 1 1.2%
9 Portugal 1 1.2%
10 Russia 1 1.2%
11 Sweden 1 1.2%