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 72 51.1%
2 United States 29 20.6%
3 Germany 19 13.5%
4 Hong Kong 5 3.5%
5 Canada 5 3.5%
6 United Kingdom 3 2.1%
7 Iran, Islamic Republic of 3 2.1%
8 Taiwan 2 1.4%
9 Ukraine 1 0.7%
10 Japan 1 0.7%
11 Portugal 1 0.7%