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 62 41.1%
2 United States 43 28.5%
3 Netherlands 13 8.6%
4 Germany 10 6.6%
5 Hong Kong 6 4%
6 Portugal 6 4%
7 Senegal 3 2%
8 3 2%
9 Russia 2 1.3%
10 Taiwan 1 0.7%
11 United Kingdom 1 0.7%
12 France 1 0.7%