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 40 40.4%
2 Germany 17 17.2%
3 Netherlands 16 16.2%
4 China 10 10.1%
5 Hong Kong 7 7.1%
6 Canada 3 3%
7 Taiwan 3 3%
8 Ukraine 1 1%
9 United Kingdom 1 1%
10 Portugal 1 1%