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 United States 30 36.1%
2 China 25 30.1%
3 Germany 14 16.9%
4 Hong Kong 5 6%
5 2 2.4%
6 Singapore 2 2.4%
7 Taiwan 2 2.4%
8 Iran, Islamic Republic of 1 1.2%
9 Portugal 1 1.2%
10 Russia 1 1.2%