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 34 37%
2 China 27 29.3%
3 Germany 15 16.3%
4 Hong Kong 4 4.3%
5 Taiwan 3 3.3%
6 France 2 2.2%
7 Canada 2 2.2%
8 Austria 1 1.1%
9 Japan 1 1.1%
10 Portugal 1 1.1%
11 Sweden 1 1.1%
12 United Kingdom 1 1.1%