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 59 56.7%
2 China 22 21.2%
3 France 5 4.8%
4 United Kingdom 5 4.8%
5 Germany 4 3.8%
6 Taiwan 3 2.9%
7 Russia 2 1.9%
8 Canada 1 1%
9 Estonia 1 1%
10 Netherlands 1 1%
11 North Macedonia 1 1%