BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 31 37.8%
2 United States 19 23.2%
3 Canada 8 9.8%
4 Singapore 7 8.5%
5 Germany 5 6.1%
6 Hong Kong 3 3.7%
7 Macao 2 2.4%
8 Netherlands 2 2.4%
9 Taiwan 2 2.4%
10 United Kingdom 2 2.4%
11 Serbia 1 1.2%