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 63 48.5%
2 United States 31 23.8%
3 Germany 18 13.8%
4 Canada 5 3.8%
5 Hong Kong 3 2.3%
6 Taiwan 3 2.3%
7 United Kingdom 2 1.5%
8 Ukraine 1 0.8%
9 France 1 0.8%
10 Netherlands 1 0.8%
11 Portugal 1 0.8%
12 Sweden 1 0.8%