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 35 52.2%
2 United States 11 16.4%
3 Germany 7 10.4%
4 Taiwan 4 6%
5 Hong Kong 3 4.5%
6 United Kingdom 2 3%
7 Bulgaria 1 1.5%
8 Canada 1 1.5%
9 Portugal 1 1.5%
10 South Africa 1 1.5%
11 Sweden 1 1.5%