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 301 44.6%
2 United States 179 26.5%
3 Netherlands 91 13.5%
4 Germany 53 7.9%
5 Canada 17 2.5%
6 Hong Kong 7 1%
7 Russia 6 0.9%
8 Taiwan 4 0.6%
9 France 4 0.6%
10 South Africa 3 0.4%
11 Singapore 2 0.3%
12 United Kingdom 2 0.3%
13 Luxembourg 2 0.3%
14 Malaysia 2 0.3%
15 Indonesia 1 0.1%
16 Japan 1 0.1%