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 23 30.3%
2 China 22 28.9%
3 Netherlands 10 13.2%
4 Hong Kong 7 9.2%
5 Germany 6 7.9%
6 Japan 2 2.6%
7 Canada 2 2.6%
8 United Kingdom 2 2.6%
9 Portugal 1 1.3%
10 Taiwan 1 1.3%