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 24 29.6%
2 United States 19 23.5%
3 Netherlands 9 11.1%
4 Canada 9 11.1%
5 Taiwan 5 6.2%
6 Hong Kong 5 6.2%
7 Germany 3 3.7%
8 Guam 2 2.5%
9 Russia 2 2.5%
10 Singapore 2 2.5%
11 Korea, Republic of 1 1.2%