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 42 39.6%
2 United States 27 25.5%
3 Germany 15 14.2%
4 Hong Kong 4 3.8%
5 Nigeria 3 2.8%
6 Canada 3 2.8%
7 Taiwan 3 2.8%
8 United Kingdom 2 1.9%
9 Norway 2 1.9%
10 Japan 2 1.9%
11 Portugal 1 0.9%
12 Russia 1 0.9%
13 Australia 1 0.9%