BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 14 42.4%
2 China 4 12.1%
3 Netherlands 4 12.1%
4 Germany 3 9.1%
5 Czech Republic 2 6.1%
6 Estonia 1 3%
7 Colombia 1 3%
8 Russia 1 3%
9 Singapore 1 3%
10 United Kingdom 1 3%
11 Canada 1 3%