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 31 37.8%
2 United States 20 24.4%
3 Germany 14 17.1%
4 Canada 5 6.1%
5 Hong Kong 4 4.9%
6 Taiwan 3 3.7%
7 Norway 2 2.4%
8 Portugal 1 1.2%
9 Russia 1 1.2%
10 United Kingdom 1 1.2%