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 35 36.1%
2 United States 21 21.6%
3 Germany 15 15.5%
4 Hong Kong 9 9.3%
5 4 4.1%
6 Canada 3 3.1%
7 Taiwan 3 3.1%
8 Russia 2 2.1%
9 Norway 2 2.1%
10 Portugal 1 1%
11 Singapore 1 1%
12 United Kingdom 1 1%