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 49 33.3%
2 United States 48 32.7%
3 Germany 18 12.2%
4 Netherlands 10 6.8%
5 Hong Kong 8 5.4%
6 Portugal 5 3.4%
7 3 2%
8 Senegal 3 2%
9 Russia 1 0.7%
10 Ireland 1 0.7%
11 Czech Republic 1 0.7%