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 39 40.6%
2 China 29 30.2%
3 Germany 15 15.6%
4 Hong Kong 3 3.1%
5 Canada 3 3.1%
6 Taiwan 3 3.1%
7 United Kingdom 1 1%
8 Netherlands 1 1%
9 Portugal 1 1%
10 Sweden 1 1%