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 56.2%
2 United States 19 21.3%
3 Germany 7 7.9%
4 Taiwan 4 4.5%
5 Hong Kong 3 3.4%
6 United Kingdom 2 2.2%
7 Canada 1 1.1%
8 Portugal 1 1.1%
9 Russia 1 1.1%
10 Sweden 1 1.1%