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 155 55.2%
2 United States 57 20.3%
3 Germany 44 15.7%
4 Hong Kong 5 1.8%
5 Serbia 4 1.4%
6 United Kingdom 4 1.4%
7 Russia 3 1.1%
8 Canada 3 1.1%
9 Norway 2 0.7%
10 Finland 2 0.7%
11 Netherlands 1 0.4%
12 Ukraine 1 0.4%