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 United States 31 23.3%
2 Netherlands 28 21.1%
3 China 16 12%
4 Russia 10 7.5%
5 Sweden 10 7.5%
6 Germany 8 6%
7 Korea, Republic of 7 5.3%
8 Malaysia 4 3%
9 Singapore 4 3%
10 Hong Kong 3 2.3%
11 Ireland 2 1.5%
12 Switzerland 2 1.5%
13 Taiwan 2 1.5%
14 United Kingdom 2 1.5%
15 Viet Nam 2 1.5%
16 Canada 1 0.8%
17 Czech Republic 1 0.8%