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 25 35.7%
2 China 14 20%
3 Germany 7 10%
4 Canada 5 7.1%
5 France 4 5.7%
6 United Kingdom 4 5.7%
7 Russia 3 4.3%
8 Taiwan 2 2.9%
9 Moldova, Republic of 2 2.9%
10 Estonia 2 2.9%
11 Poland 1 1.4%
12 Ukraine 1 1.4%