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 38 31.7%
2 United States 31 25.8%
3 Germany 16 13.3%
4 Canada 8 6.7%
5 Netherlands 7 5.8%
6 France 6 5%
7 Taiwan 5 4.2%
8 Hong Kong 4 3.3%
9 Japan 2 1.7%
10 United Kingdom 1 0.8%
11 Portugal 1 0.8%
12 Sweden 1 0.8%