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 55 36.7%
2 China 44 29.3%
3 Germany 17 11.3%
4 Canada 14 9.3%
5 Netherlands 8 5.3%
6 Hong Kong 3 2%
7 Taiwan 3 2%
8 2 1.3%
9 Estonia 1 0.7%
10 Portugal 1 0.7%
11 Turkey 1 0.7%
12 United Kingdom 1 0.7%