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 25 30.1%
2 China 21 25.3%
3 Germany 16 19.3%
4 Hong Kong 11 13.3%
5 Canada 4 4.8%
6 United Kingdom 2 2.4%
7 Australia 1 1.2%
8 Portugal 1 1.2%
9 Russia 1 1.2%
10 Sweden 1 1.2%