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 269 50.8%
2 United States 107 20.2%
3 Germany 46 8.7%
4 Netherlands 41 7.7%
5 Canada 29 5.5%
6 Sweden 13 2.5%
7 Russia 5 0.9%
8 Hong Kong 5 0.9%
9 Finland 4 0.8%
10 Australia 2 0.4%
11 Ukraine 2 0.4%
12 Norway 2 0.4%
13 Philippines 1 0.2%
14 Poland 1 0.2%
15 Taiwan 1 0.2%
16 Japan 1 0.2%
17 Nigeria 1 0.2%