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 United States 52 36.9%
2 China 50 35.5%
3 Netherlands 14 9.9%
4 Germany 6 4.3%
5 Hong Kong 5 3.5%
6 Taiwan 5 3.5%
7 Senegal 3 2.1%
8 Korea, Republic of 2 1.4%
9 United Kingdom 2 1.4%
10 Bulgaria 1 0.7%
11 Portugal 1 0.7%