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 94 56.3%
2 United States 23 13.8%
3 Germany 14 8.4%
4 Hong Kong 6 3.6%
5 Canada 6 3.6%
6 Portugal 5 3%
7 Russia 5 3%
8 Senegal 3 1.8%
9 3 1.8%
10 Taiwan 3 1.8%
11 United Kingdom 1 0.6%
12 Malaysia 1 0.6%
13 Czech Republic 1 0.6%
14 France 1 0.6%
15 Singapore 1 0.6%