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 202 53.7%
2 United States 75 19.9%
3 Germany 39 10.4%
4 Canada 14 3.7%
5 Hong Kong 9 2.4%
6 Netherlands 7 1.9%
7 Taiwan 5 1.3%
8 Russia 4 1.1%
9 Iran, Islamic Republic of 4 1.1%
10 Finland 3 0.8%
11 Sweden 3 0.8%
12 Malaysia 2 0.5%
13 Romania 2 0.5%
14 Bulgaria 2 0.5%
15 India 2 0.5%
16 Japan 1 0.3%
17 Nigeria 1 0.3%
18 Norway 1 0.3%