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 27 26.7%
2 United States 18 17.8%
3 Netherlands 14 13.9%
4 Canada 11 10.9%
5 United Kingdom 7 6.9%
6 Malaysia 7 6.9%
7 Germany 4 4%
8 Singapore 4 4%
9 Switzerland 3 3%
10 Kazakhstan 2 2%
11 Philippines 2 2%
12 Mexico 1 1%
13 Czech Republic 1 1%