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 139 55.4%
2 United States 53 21.1%
3 Germany 42 16.7%
4 Tunisia 3 1.2%
5 Turkey 3 1.2%
6 United Kingdom 2 0.8%
7 Finland 2 0.8%
8 Netherlands 2 0.8%
9 Singapore 2 0.8%
10 Sweden 1 0.4%
11 France 1 0.4%
12 Canada 1 0.4%