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 171 70.7%
2 United States 32 13.2%
3 Germany 21 8.7%
4 United Kingdom 5 2.1%
5 Azerbaijan 2 0.8%
6 Netherlands 2 0.8%
7 Russia 2 0.8%
8 Singapore 2 0.8%
9 Ukraine 1 0.4%
10 Philippines 1 0.4%
11 Romania 1 0.4%
12 India 1 0.4%
13 Macao 1 0.4%