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 China 161 51.6%
2 United States 66 21.2%
3 Germany 36 11.5%
4 Canada 25 8%
5 Hong Kong 7 2.2%
6 Poland 7 2.2%
7 Russia 3 1%
8 United Kingdom 3 1%
9 Taiwan 2 0.6%
10 Greece 1 0.3%
11 Switzerland 1 0.3%