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 China 35 34%
2 United States 29 28.2%
3 Netherlands 12 11.7%
4 Germany 7 6.8%
5 Hong Kong 5 4.9%
6 Canada 5 4.9%
7 Taiwan 4 3.9%
8 United Kingdom 3 2.9%
9 Portugal 1 1%
10 Russia 1 1%
11 Sweden 1 1%