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 37 32.2%
2 China 30 26.1%
3 Netherlands 13 11.3%
4 Canada 8 7%
5 Taiwan 5 4.3%
6 Italy 4 3.5%
7 Germany 3 2.6%
8 United Kingdom 3 2.6%
9 Sweden 3 2.6%
10 Hong Kong 2 1.7%
11 Bulgaria 2 1.7%
12 Czech Republic 2 1.7%
13 Japan 1 0.9%
14 Mauritius 1 0.9%
15 Sri Lanka 1 0.9%