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 50 32.9%
2 United States 41 27%
3 Netherlands 22 14.5%
4 Germany 19 12.5%
5 Taiwan 7 4.6%
6 Canada 4 2.6%
7 Hong Kong 3 2%
8 Japan 2 1.3%
9 France 1 0.7%
10 United Kingdom 1 0.7%
11 Portugal 1 0.7%
12 Sweden 1 0.7%