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 41 40.6%
2 United States 30 29.7%
3 Germany 12 11.9%
4 Canada 6 5.9%
5 Hong Kong 5 5%
6 Taiwan 2 2%
7 Ukraine 1 1%
8 United Kingdom 1 1%
9 India 1 1%
10 North Macedonia 1 1%
11 Portugal 1 1%